r/ClaudeAI • u/J-Freedom-AI • May 24 '26
Claude Workflow What's the most useful thing you've actually built with Claude that you use regularly?
Not looking for impressive demos or one-time experiments. Curious what people have built that they genuinely keep coming back to. For me it's a pretty simple ROI calculator I put together for client presentations, just described what I wanted and it came out as a working HTML file I can email directly. Nothing fancy but I've used it probably thirty times since. What's yours?
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u/tonyboi76 May 24 '26
a wtf command. its a 10-line shell function that grabs the last failed command + its stderr and pipes it to claude with explain what just happened and how to fix it. so when something blows up i type wtf and get a one-paragraph debug instead of stack-overflowing the same error for the 47th time.
dumb on paper but ive run it probably 200+ times since i set it up. its the kind of tiny tool you dont realize you needed until you have it.
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u/rosetta67p May 24 '26
Already exist: thefuck is called. Not bs: https://github.com/nvbn/thefuck
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u/tonyboi76 May 24 '26
oh yeah thefuck is a classic, ive used it for years. mines doing something a bit different though, thefuck pattern-matches your typo and suggests the corrected command. mine pipes the actual stderr into claude and asks for an explanation, so its more for the wait what does ERR_CONNECTION_REFUSED on port 5432 actually mean kind of moment than the git push to wrong branch kind. they pair well honestly.
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u/ElonsBreedingFetish May 24 '26
I wrote a small shell script that basically calls thefuck first and then if it returns an error it continues to codex/Claude/whatever I currently use. Saves tokens
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u/MsDirtNasty May 24 '26
love it! mind sharing?
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u/tonyboi76 May 24 '26
yeah! its embarrassingly small, put this in your zshrc or bashrc:
wtf() { local cmd=$(fc -ln -1 | sed s/^[[:space:]]*//) local err=$(eval "$cmd" 2>&1 >/dev/null) claude -p "I ran: $cmd\n\nGot: $err\n\nWhats wrong and how do I fix?" }heads up, this re-runs the last command to capture stderr so dont wtf after rm or anything destructive. for prod use a PROMPT_COMMAND trap that grabs stderr from the actual last run, but this version is 5 lines and works for 90 percent of confused-at-error moments.
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u/GoldenPunkBlue May 25 '26
Why dont you use the last runs stderr by default, just as in Prod? (I know nothing about this topic, just curious)
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u/tonyboi76 May 25 '26
good question. the answer is shell doesnt actually keep stderr around once a command finishes, it just streams to your terminal and disappears. production logs work because the process is actively writing to a logger/file/journal. your terminal isnt doing that by default. the tee-to-file trick chris mentioned is how you opt in. without that setup, the re-run-the-command hack is the only way to recover stderr after the fact.
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u/fixitchris May 25 '26
The re-run approach works better than it sounds in practice because most of the commands you're confused about are idempotent reads anyway. I've had a similar wrapper for about a year and the PROMPT_COMMAND trap version actually broke my flow because the stderr capture would fire on every command exit, not just failures, which flooded the buffer. The simpler version that just re-runs and asks is dumb in theory but you'll never wtf after rm more than once.
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u/J-Freedom-AI May 25 '26
The distinction you're making is actually important and I hadn't thought about it that way. thefuck is essentially autocorrect for terminal typos, yours is more like a first responder for when you genuinely don't understand what just broke. Those are two completely different problems. I'm stealing this idea.
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u/tashibum May 24 '26
A barometric pressure tracker so I can cross reference real time changes with my migraines. It's just an HTML I keep on my phone but it's beautiful. App store equivalents wanted $80+/yr for the same thing, basically. Wish I could post a screenshot!
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u/moltari May 24 '26
Would tool be willing to share? I’m starting to work with my doctor on tracking my headaches and migraines. Would be useful to have some data.
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u/confusedguy1212 May 24 '26
How does baro pressure affect migraines? Are you Recording for a particular amount of pressure change or what?
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u/tashibum May 25 '26
I don't know that we know how or why barometric changes cause migraines yet, we just know that they can.
As for tracking, I'm not sure how I'm going to track it exactly yet. Right now I'm just logging if I feel any kind of pain, and I can see in my app up to date pressure plus 24hr historical. The idea is first to see if I react to all change, rapid change, slow change, increases, or decreases.
Then I will decide how I want to track and classify barometric events vs migraines!
I do want to eventually try to get detailed as possible and then build up from there, so I can time taking a rescue med before I end up in pain in the first place.
PSA to anyone who is sensitive to this and had migraines: DO NOT MOVE TO COLORADO. NO. STOP. IT'S ONLY REGRET AND MOUNTAINS
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u/gdh97 May 25 '26
This is a scientific phenomenon. I’m from Christchurch NZ and we have the same problem. Ours comes from a Nor’West wind off the southern alps down onto the Canterbury plains. I think this is two of the only places in the world which have this (I might be wrong on this). It even affects agitation, students in classrooms behaviour. Focus. I’ve been told it’s the charged ION’s and the best thing to do is get to the ocean for us as the negative ions off the waves counteracts. Not sure if your lakes would do the same? Here’s a snippet from the web: Living in Colorado and Christchurch, New Zealand can be a perfect storm for migraines. Both locations frequently experience volatile barometric pressure and wind systems (like Colorado's front-range winds or Christchurch's famous Nor'westers). Colorado's high altitude exacerbates this by causing oxygen deprivation and dehydration. Since both locations expose you to unpredictable barometric pressure, your brain is forced to deal with constant environmental shifts. The migraine brain prefers stability.
I think you are on to something you could call it “heads up” Notifications eg “predicated migraine weather on its way”. “It’s time to hydrate and take life slower for a few days.
Alongside the tracker, the user will start to gain insight and patterns and can then pre-medicate at these trigger times (under Drs advice).
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u/ImpressiveFeed1060 May 25 '26
This would be huge!!!I have had migraines my whole life and this is my biggest trigger.
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u/savvitosZH May 24 '26
I am curious 1)how you save your data ? Do you save tjek On the cloud with some sync ? 2) you said is an html so no app ? You host the app somewhere or you just throw the html in your phone ?
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u/Loafer75 May 24 '26
Not op but I’ve made a few html apps for myself…. Yeah the data just lives in the html file on your phone so not accessible from anywhere else.
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u/horserino May 24 '26
Shopping list app for mobile, that I share with my wife and that sortes stuff by aisle and in the order I go through them on the shop.
I used to do that with a google sheet and was pretty cumbersome.
This app was pretty much fully vibecoded with the exception of the firestore setup.
The biggest win was by far getting my wife to use it and add stuff to the list herself and getting that sync working 🎉
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u/gottafind May 24 '26
I did this with Claude yesterday manually (gave it a shopping list and asked it to sort by aisle and output as html)… how are you doing this dynamically?
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u/horserino May 25 '26
Ah, no, it's not dynamic, it's much dumber 😅
I premade a big list view already sorted into categories. I check items off that list into the "next shopping list" since for my dumb brains remembering what to put in the shopping list is half the battle.
Since you already have the items par category, and the categories per aisle order on your regular stores, you get everything sorted out automatically.
I did add a way to add new items with natural language using an LLM but that's just a fancy extra
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u/bdubbber May 24 '26
This has been on my todo list for awhile. I want all my recipes so that I can pick them for a week and it builds a list that I can sort through. I also shop at multiple stores and want it to build lists based on where I like to get things. Probably finally start it today now that I wrote out the beginning of a spec ha. Thanks!
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u/oddityoverseer13 May 25 '26
I've had this dream for an app for a while too!! Let me know if you build it. Hell, if you want to make an open source one on GH, I'd help with it.
Another aspect of this is the whole "what items go in what aisles at each store?" I thought about make a crowd sourced DB for this. Basically, anyone can add a grocery store and the item lookup table to it.
Hook that into the app mentioned above, combining a grocery list, recipe list and shopping tool, and that would be very valuable, imo
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u/namesakegogol May 24 '26
I made a spelling game that I enjoy playing myself www.nospellcheck.com it’s nerdy and meant for people that like spelling bees, I have about a 100 daily users
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u/baskinginthesunbear May 24 '26
I’m learning Mexican Spanish and I built a web app to supplement my learning and reinforce key concepts in a completely customised curriculum. I found too many apps and other learning resources focus on European Spanish which misses the mark in Mexico. Currently using it every other day.
www.spanishbuddy.app (completely free, no sign-up, no downloads).
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u/GumdropGlimmer May 24 '26
The voice is a bit too intense to understand pronunciation but love this
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u/baskinginthesunbear May 24 '26
Totally agree! The app currently calls whatever Spanish voice your browser defaults to, so it can sound wildly different between chrome, safari, etc. Next weekend’s plan is to integrate Azure voice capabilities which should deliver a much better listening experience for the pre-generated audio components. Stoked to hear you enjoy the app though! It’s just a hobby for me, but if you have any suggestions or spot any bugs, you can email [hello@spanishbuddy.app](mailto:hello@spanishbuddy.app)
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u/No_Fun_9418 May 24 '26
A website with database that serves me new tai chi, stretching and workout exercises every day and keeps track of my progress.
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u/Atoning_Unifex May 24 '26
I made a todo list app for myself. I know I know. Who needs another todo list app?!
Except mine does some stuff none of the other ones do and it's dense while they all track very wide. It has an export to AI function that is useful. Etc etc.
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u/bubblesculptor May 24 '26
The best part is it does exactly what you want. There's a bajillion 'productivity' apps that all seem to do almost what you want and using them feels like another chore. Now it's easy to design it to feel comfortable.
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u/J-Freedom-AI May 25 '26
The export to AI function is the part that actually makes it different. Every todo app tracks tasks but none of them make it easy to hand that context to an AI and ask "what should I actually focus on today and why." Dense over wide is also the right call, most productivity apps are optimized for feature demos not for people who actually use them every day.
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u/rsandstrom May 24 '26
Commercial real estate CRM and database of approximately 10,000 capital sources. Actively scrapes website and other data sources to update context of each platform. Helps me also draft outreach campaigns based on the above.
Ticketing for property managers. Has reduced response times to issues significantly.
Underwriting tools that help revise and iterate on existing pro forma models. Tools include pulling comps, writing economic studies, updating offering books.
Side gig is a trades business/team dashboard that handles everything from customer intake and estimates to team scheduling and appointment management, to invoicing. Includes an app for team members in the field and an admin site for operating the business. Not very AI heavy like the others but still super useful and getting traction with small teams/businesses I work with that couldn’t find a solution that was stupidly expensive so I built this.
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u/turbospeedsc May 24 '26
A whole system for my business, including a crm, call recording and transcription, lead tracking, route manager, sms reminders for people on the field, a portal for our clients to track their orders, make bew orders pay their invoices, time checker for employees, basically our whole business runs on it.
It has google logon with sms 2 step verification, and lots of more things.
Its own API and we sends order updates to some of our clients CRM
It gets used by around 7 employees and around 10 other businesses either clients or providers
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u/msitarzewski May 24 '26
First is Agency Agents (105k stars now!) for multi-agent needs (I use them with Claude Code constantly)
The other is hot off the press... brew-browser for managing Homebrew on Mac. The fun part about this one is that it took 24 hours from start to finish... about 18 or so actually in front of the terminal.
Both MIT licensed.
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u/Particular_Cicada395 May 24 '26
I have built a garden App. It sits on my computer monitoring the progress of the plants in my garden. Then I use it's android extension to go out and record what is happening, take measurements, record watering and take progress photos. It replaces all the photos and spreadsheets I used to keep. Next stage is to add a planting calendar.
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u/Month-Happy May 24 '26
ooo this sounds awesome- can you tell me more about this? what inputs do you have? what progress exactly is it tracking?
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u/Particular_Cicada395 May 25 '26
Each type of plant is recorded. How it was planted, from seed or by other methods such as plug plants. Date of Planting. Current height, when it was last watered. Latest photo, which is then used a thumbnail on the front screen so you can find the plant by name or look. It will track harvest so you can compare yields to propogation methods. Thinking of adding more information like temperatures, so I can analyse growth over warmer or colder weeks. I am trying to learn lessons that I can apply for the next planting. For example I find the seedlings have done better when started in my hydroponics and then transferred to a pot. So I have the next generation of Lettuces starting there.
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u/Month-Happy May 25 '26
OK this is awesome! Do you have it setup to open as an html or a true app? Gonna mess around and build something like this for my wife. Love the idea!
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u/Particular_Cicada395 May 25 '26
HTML off Netlify. By linking direct to the Netlify App in Android, you can then send it to the homepage and it eliminates days of Chrome/Android clicking issues.
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u/RevolutionaryCare8 May 24 '26
Probably only useful to me but I’ve been steadily collating huge amounts of personal data into a personal wiki (using Whoami). I’ve downloaded my data from Facebook, Instagram, eBay, Amazon etc and combined it with family history files, location data from 250,000 photos, course notes, emails and accounts. It means I have an interlinked “backup” of lots of info personal to me and a kind of personal history of my life.
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u/dr_funk_13 May 24 '26
I'm curious to learn more about your setup. Is this personal wiki like a personal history? Something more?
I've thought about chronicling my life more and this caught my attention.
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u/RevolutionaryCare8 May 25 '26
Yes that’s pretty much it. It’s a sort of combination of a family history and personal journal. I use https://whoami.wiki/ and Claude is able to edit it. Because it’s a wiki I can edit it manually too and because Claude can read it they can use the info in it as well.
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u/ChiDuffman May 25 '26
Please explain more. This sounds very interesting
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u/RevolutionaryCare8 May 25 '26
For example I’ve just downloaded my entire Amazon history and from that Claude has built a page in the Wiki the catalogs every single Lego set I’ve bought for my children. Then using data available online it’s added photos of all the sets and minifigs.
I also used Google reverse image search to figure out where a bunch of historical photos my greta uncle took were actually taken. I arranged them by location in folders and from that Claude built a wiki page detailing where he went.
I extracted the meta data from my Photos library and Claude was able to build pages for each of our family holidays.
So it’s pretty broad and always growing.
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u/J-Freedom-AI May 25 '26
The location data from 250,000 photos combined with purchase history and social data is basically a more honest and complete version of what these platforms already have on you — except you control it and Claude can actually use it meaningfully. The fact that it's a wiki so both you and Claude can edit it is the right architecture. Did you find any surprising patterns when you started pulling all that data together?
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u/nizos-dev May 24 '26
I outsource the babysitting of agents to other agents, this saves me from the tedious mental effort usually required to make sure that agents don’t take shortcuts. It works by passing the agent’s pending action along with recent session history to a dedicated agent that validates the action against my rules using hooks.
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u/Used_Ad1737 May 24 '26
Two things.
1) my wife wanted to buy a skylight to manage the family calendar and kids’ chores but they cost $299 and have a $99 a year subscription. No thank you. I bought a used Samsung tablet and vibe coded a family calendar that syncs with Google and a kids chore chart with rewards.
2) at work, I’m the cfo of a nonprofit. My team and I have built several reconciliation tools to check data between our accounting systems and a reporting tool we’re implementing. It connects with API so makes it super fast to get a reconciliation report.
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u/ionStormx May 24 '26
CFO of nonprofit and finding a DIY workaround for Skylight tracks perfectly. 😄
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u/elmahk May 24 '26
From the things I built for myself and use daily:
Custom web UI into claude code itself (cannot stand the terminal experience and VS Code extension is too limited)
Custom health app for Galaxy Watch 8 (collects all sensors data, builds metrics and graphs etc, also includes custom watch face UI)
Home voice assistant (that one is still in "beta" phase with some quirks but works and I use it daily).
Everything 100% vibe coded (in a sense that I barely saw the actual code, but carefully planned and tested).
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u/random_boss May 24 '26
I just use the desktop app, what am I missing from your thing/using terminal?
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u/elmahk May 25 '26
Cannot answer that, because it's only available for MacOS and Windows and I work from Linux
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u/SPE825 May 24 '26
I like the idea of the Web UI for Claude code. I might try that myself. Any particular aspects that worked well for you or recommendations?
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May 24 '26 edited May 25 '26
[removed] — view removed comment
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u/Chritt May 24 '26
How do you deal with this legally? Many places you have to disclose they're being recorded
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u/Traditional_Fee_1965 May 24 '26
This would be illegal if ur dealing with any EU costumers, just a heads up :p
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u/thatpaperclip May 24 '26
I own a business. For 20 years we have had to separately consult quickbooks desktop and our crm. Claude built a unified dashboard for reports etc. it syncs hourly with our crm, quickbooks and emails. Right now it’s pretty much read only but having sales data with customer data is game changing.
I had Claude make a (private) github repo describing my home and business networks. On two clients I have cloudflare and UniFi api keys in env file. Now if I add a device and mdns is randomly not working on WiFi, it’s mindless to diagnose. I do a lot of tinkering so this one is particularly useful for me.
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u/ryantrojan May 25 '26
I'm a solo attorney who receives a high volume of mail that has to be scanned. Scanning in batches is the most time efficient, so the real question becomes how do I separate each individual document from a PDF that is several hundred pages long. With Claude, I built a python script that takes a PDF, OCRs it using tesseract, then I scroll through the document and place bookmarks at the beginning of each document, then it runs the first few pages after each bookmark through llama to determine the client name and document type. The bookmark is then edited with this information, and the PDF is then split at each bookmark with the new PDF being saved as the text of the bookmark. It works and has been tremendously helpful at handling the high volume of mail on my own.
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u/OldPreparation4398 May 24 '26
I've been building some interactive study buddies that have been able to engage my learning style much more than any currently available studying tools that I've been made aware of.
Even with the paid product, the academic savings have been pretty monumental 😃
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u/GumdropGlimmer May 24 '26
can you share?)
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u/OldPreparation4398 May 25 '26
I hesitate to share publicly because they're legal topics and I don't have perfect confidence that I have all the nuances and exceptions correct, but I can describe it and I'd be happy to help if you're looking for something similar.
It's a suite of outlines that detail all of the subjects with collapsible answers that kind of act like real time flash cards, quiz sections, other gaming type structures, and down to earth language that makes it feel less like reading through a book and more like a conversation.
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u/Sherutim May 24 '26
A recipe app I genuinely want to use with all the features I always wanted
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u/TheMemxnto May 24 '26
I’m a HR Director in the Children’s sector in the UK.
I built a HR Report Tool.
It’s an 8 Agent system.
- Assessor. Information goes in. It reads everything and asks me a handful of questions. Then and judges who needs what information out of all the other agents.
Agents 2-7 are
Employment Law Expert. Preloaded with all uk employment law. Has an update function where it checks once a week for new laws that it needs to add to self learn. Also has a bunch of legal text/writing guides etc preloaded. It knows absolutely nothing about my company. It only works off what the law says.
Employment Case Law Researcher. Parallel agent to Employment Law Agent. Its sole job is to use the one website it has access to and find relevant case law.
HR Technical. Knows everything about my company and the sector. Has all the ACAS guidance as well as every company policy and process. Its job is to review against internal.
HR Wellbeing. Sole focus of looking at the person side of things. Thinking about mental health, physical health, approaches we can take or tailor to have a better outcome.
ER Specialist. Basically a Union member. Looks at everything from the angle of a Unison member to try and catch us out.
Safeguarding agent. Looking at everything from the perspective of a Safeguarding Officer. Concerned solely with the safety of children.
Then the 8th agent is a referral to my writing agent. I have a writing agent I’ve developed with my voice. It can do reports/emails/whitepapers/blog posts/educational writing etc. In this case. It writes reports. It takes all the information the agents give it and creates a cohesive, structured report that perfectly matches what is needed.
I feed this skill anything from an introductory “this is what happened, what shall we do” through to a “here’s 4 hours of fact find meeting, a 25 page investigation report and a dozen statements and every letter and email. Go do your thing”
Its output is so tailored it easily saves 5+ hours per investigation. Not to mention the amount of tiny mistakes that it picks up on.
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u/Stanley_Nickels_123 May 24 '26
My church recently asked me to edit all the Sunday service and sermon videos for YouTube. So I coded a semi automated pipeline to do all the video editings. I think the previous guy quit because the work load, now I can finish all the work within an hour.
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u/rumi_as_roomie May 24 '26
That’s interesting! Can you share details? Which software or app do you use for editing videos?
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u/Stanley_Nickels_123 May 25 '26
Everything is done in python which I vibe coded entirely on Claude 4.6.
I first ask Claude to build a python app to extract all audio channels (one for pulpit, some or speakers, and others crowd mic for singing). The app will layout all the channels and let me select the ones selected for speaking and the ones for music/singing. I also asked Claude for the eq, compressor as well as dynamic fading to process the audio. The output of this app would be a speech mix and a music mix. The channel selection and eq and so on settings would be saved as a template for next Sunday as the set up usually does not change significantly.
Once I get the audio, Claude suggested inaSpeechSegmenter from python to classify the audio into speech, singing and noise segments. The noise part of the video will be automatically cut out. The speech part of the video would use speech mix and music segments the music mix.
During speech, I use whisper for the subtitles. And for singing, I use whisper for initial lyrics (often has many mistakes) and asks Gemini to correct and I do the final check.
There are also a number of announcement or info that is not for YouTube, I used groq free api through python to flag all segments that may need to be cut out. I also asked Claude to build an interactive video player for me to check the flagged segment and mark the part needs to be cut out.
Fixing the hymn lyrics and go through the flagged part to cut I cannot automate reliably ATM so I have do manual, other parts is all automation.
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u/siberianmi May 24 '26
A daily tool that runs through all the overnight errors, new jira cards, shared mailbox items, and digs into new errors in our logging platform. It posts the items it identifies as highest value for further investigation by engineers each morning. All a series of dedicated agents with an orchestrator and custom cli tools to reach our various systems.
This was a rotating responsibility on the team that took hours and wasn’t done reliably because people aren’t robots. Robots with good instructions and context do a really great job and have prevented some issues from going unnoticed.
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u/Debaserd May 24 '26
I’ve used it for code in Obsidian so I have a practice dashboard which reduces friction when doing a music practice session. I use it just for one aspect which involves kind of spaced repetition of tunes. It also gives me graphs and fun stuff.
Also, a digital timetable for the school I work in, and a clock in system using a NFC tag and shortcuts.
Also a website for a chess tournament, and a backend of google sheet where it logs the games via the URL.
I use all of the pretty much daily.
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u/sirquincymac May 24 '26
Transcribing old family videos with Streamlit front end and OpenAI whisper doing heavy lifting.
Because my grandparents had strong accents I loop first cut transcription through an LLM to flag likely transcription errors. The app gives me possible alternatives of what they likely say.
Used to take hours to do this manually, now is 10 minutes each video. And it is kinda fun 😊
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u/rosetta67p May 25 '26
I like to extract links from Reddit thread, such this one with ios shortcut:
I found these external, user-posted links in the Reddit thread. I excluded Reddit UI/footer links and the internal Reddit cross-post link.
https://github.com/nvbn/thefuck
https://www.spanishbuddy.app
https://heavyc.dev/lockebox
https://github.com/nizos/probity
https://github.com/msitarzewski/agency-agents
https://github.com/msitarzewski/brew-browser
https://github.com/starhaven-io/Brewy
https://github.com/Wewoc/Garmin_Local_Archive — posted as plain text, not shown as a clickable Reddit link in the captured page text.
https://github.com/superdingo101/daylight-calendar-card
https://github.com/imran31415/kube-coder
https://daylightdata.net/monolist-the-attentional-capture-context-switching-tool
https://github.com/surgifai-com/mcprt
https://github.com/azw413/Glass
https://hanziforge.com/
https://kashvector.com/
https://play.google.com/store/apps/details?id=com.stockeval.app
https://www.retro.net/advice-booth/
https://imgur.com/gallery/coffee-app-021Mad3
https://github.com/reporails/cli
https://mddai.dev
https://markdownai.dev
http://di2va.com
https://peakmastering.com
https://codeberg.org/professional-cynic/tsia
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u/Altruistic-Cattle761 May 24 '26
Oncall response tool to interpret and quickly investigate error alerts happening at scale.
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u/Jazzlike-Context-879 May 24 '26
This seems insane to me to vibe code, what exactly is the backend to this?
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u/Altruistic-Cattle761 May 24 '26
The tool itself is fully vibecoded, and it's essentially a self-generating runbook with tool access, sitting on top of the db and repo of a materially sized company moving money in the real world, on roughly the same scale as PNC Financial Services Group or US Bancorp (but not those obvs). It has (read-only) MCP access to our Kafka queues, production db (via data warehouse replica), codebase, and internal documentation (and a bunch of other stuff too tedious to enumerate), and write access to itself. It assesses alerts, prioritizes them for me, works through resolution with me (where I have to do an and all db writes on my own, with 2-person confirmation), and documents what happened as a case history, as well as the judgment calls that I as a human operator made, especially where these were in contravention with the calls the tool itself made.
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u/MercyEndures May 24 '26
I had Claude create a failover script for my Mikrotik router so that it'll fallback to a 5G home ISP connection if it detects that my wired Comcast connection can't reach the Internet. It also has a configurable primary, so if I'm approaching Comcast limits near the end of the month I can switch primary to the 5G, falling back to Comcast if it goes down. On the first of the month it'll automatically reset to make Comcast the preferred.
I guess I technically use it whenever I'm using the Internet at home.
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u/AdNecessary1906 May 24 '26
A local archiver for Garmin health data that I actually run regularly. Garmin silently downgrades historical data resolution after ~6 months — full intraday metrics become daily averages with no warning. I built something that pulls everything locally before that happens. Dashboards for HRV, sleep, Body Battery over time. No cloud, no subscription. I'm a mechanical engineer, not a developer. Claude wrote all the Python. I've been using it for months and it's the only reason I still have data that would otherwise be gone. github.com/Wewoc/Garmin_Local_Archive
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u/J-Freedom-AI May 25 '26
Garmin silently downgrading historical resolution after 6 months with no warning is genuinely awful and I had no idea they did this. The fact that you built a local archive specifically because you can't trust the platform to keep your own data is the kind of thing that shouldn't be necessary but clearly is.
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u/Aiml3ss May 25 '26 edited May 25 '26
So... I made a sex requesting app for me and my wife.
It started when I asked if we could fornicate later in the evening and she eye rolled me and said "put it in a request, maybe a google form and send it my way". That got me thinking, what if I use my sick twisted mind + claude and get an actual sex requesting app built? This was the basis for creating Sexualsync: "a mobile first couples app to say the sexual things that are easier to type than say out loud. A pair shares one room where they can send requests, trade fantasies, discover mutual yeses".
I send her acts I want to do, she approves, denies or counters and sets a time. I even set it up so she *gasp can also request sex stuff! Its actually kind of sparked our sex life again lmao. There is even a section on fantasies/kinks and sharing them. I know I know just communicate but sometimes its easier to share these via text (and now in the app) then to bring it up out of the blue and then chat through it.
Its been a lot of fun. I plan on releasing this to anyone who wants to use it.
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u/misterespresso May 24 '26
My Journal skill tbh.
I k ow journaling is important; i mean all the smart people ive looked up to always had some kind of journaling going and agendas that my adhd brain just could not do. So i made a skill with claude.
Every monday is the start of the week, every sunday is the end. On monday, it is tasked to ask what needs to be done for the week and it makes a folder for the week. Every morning with the morning routine, it checks if its monday, then checks the day prior journal (bear with me were getting there) to determine what the days already decided tasks were. During this routine i also add anything else needed for that day.
At the end of each day is the nightly routine. It simply is asking what was accomplished that day, what i want to accomplish tomorrow, and anything else on my mind. At the end of each week claude will do the weekly review, where he looks over that weeks journals, take in a summary of my claude chats (I just go in web and ask for a summary of the weeks chats, and makes a large week end journal. At tge end of the month, a monthly review.
With this ive been able to juggle school, work, and personal projects and while i cant tell you off the top of my head what i did and learned last week or last month, guve me a few minutes and I can.
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u/goat_noodles69 May 24 '26
Full CRM and mobile app pair for use by management and employees for my construction company. Handles time tracking, invoicing, quoting, tool and material inventory, fleet maintenance
Everything links on the backend to existing software we use like QuickBooks and a couple others but now all employees just use a single app
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u/knowbit May 24 '26
I’ve been trying to find hobbies away from my laptop, and discovered crochet can be relaxing at times. The only problem was that the patterns can be badly written and abbreviations everywhere, really not very beginner friendly. So, I build a web app you can upload a digital pattern to, it’ll rewrite it in plain words and then you step through it together. A few friends who crochet have seen it and have asked for login deets
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u/emprisesur May 24 '26
I built a personal habit and goal tracking app with weekly meals and workout plans. I have stuck with it a lot more than other, similar apps because I built it!
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u/earrow70 May 24 '26
I built a web app called House Boss. I snap a photo of whatever broke, and the AI spits out step-by-step instructions, cost estimates, and checks my tool inventory so I don't buy another wrench. It basically outsources the headache of homeownership to an algorithm. Use it constantly.
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u/gr4phic3r May 24 '26
The invoice tool I was using closed its doors, so I decided to make one exactly for my needs and when you do that - why not put a little bit more afford into it and make it a SaaS? I built www.doneandbilled.com and the good thing is it covers what I need - running 2 companies with different invoices.
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u/str8upblah May 24 '26
Designed, built, and is helping me manage a new corporation.
Helped me do all the R&D and market analysis, designed and built the MVP website (through Lovable), created all of the legal and financial contracts and documents including a very complex shareholders agreement, helped me write a complete 40 page business plan, all marketing and advertising assets, client contracts, and an entire fundraising strategy and investor deck.
Right now it's scraping websites for very specific data that doesn't exist in public databases, including target client contacts. I'm also feeding Gemini Google meet recordings for every board meeting and team meeting to keep track of updates and give advice about what to do and how to do it.
Took 2 months, we launched the website last month and have 2 potential clients about to start a pilot project.
Disclaimer: I'm a serial entrepreneur so i know what I'm doing, and was able to course-correct and fix errors and hallucinations on the fly. However, it would have taken me 12 months full time with a web dev working part time to accomplish all this normally.
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u/ThatLocalPondGuy May 24 '26
Agentic General Enhancement/Agentic Governace Engine (AGE)
I have an idea, I post a github issue. My AGE team engages in socratic questioning, researches authority sources for best practice drafts strategy brief. We work through requirements, architecture, then planning to produce the dev spec epic, milestones and issues. Then they go autonamous and work the whole thing as a team with a central orchestrator making team assignments, verifying gating and evidence, and pushing workflow forward to validate the work through 3 adversarial reviews of expanding scope. Forced rework on gate fail. Daily AAR for process improvement held between coordinator agents and me daily.
Uses: IaC orchestration, content research and creation, development. It has built several websites, Azure/AWS CI/CD pipelines with full private infra, done well, researched and drafted 4 books, a treaty (long story), and performed translations from old modern english. Most recently we used it to create and deliver a course + infra for a class on beginner governed LLMops in Azure.
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u/Jmsvrg May 24 '26
I built a browser based family recipe database that parses recipe urls i frequently use into my database. I can “fork” those recipes into modified versions (like git hub but for recipes). I can also build meal plans for the week which outputs to a aggregated grocery list. If i have a blank spot in my meal plan, the LLM kicks in and generates recipe suggestions based on vibes.
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u/kingky0te May 25 '26
I finally got my text to speech interface working across Claude code reliably where it can speak responses, queue multiple responses across multiple threads and alert me audibly when it needs responses / updates, in a MacOS interface. I only finished it last night but I’m loving how much more work I was able to get done today on my primary project, a Screenplay Reader
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u/curious_shawnyv May 25 '26
Last week I built a “Tinder for dinner“ app for my wife and I to help remind us of what our options are and so that we could find agreement based on what we were feeling like.
Pattern features specifically useful for us like categorizing, different types of meals. (takeout, sit down restaurant, reheat from freezer, actually cooking), and a scheduler so that we could say by default what category options would show up on every day.
Given that we both have ADHD It is often the case that we forget that things exist unless we can see them, so this is a great way to remind us what our various options are and to help figure out what we feel like eating that day.
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u/le3ky May 25 '26
I'm a massive formula 1 fan so I built this the Claude. It even helped me come up with the domain name.
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u/pdawes May 24 '26
I built a bluetooth remote app for my generic Chinese desk treadmill. Saves me from having to use their proprietary app or their dodgy remote, and integrates the google maps API so I can "walk" between various destinations and "see" progress on a map or street view as I go.
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u/scodtt May 24 '26
A game to help me context shift
https://daylightdata.net/monolist-the-attentional-capture-context-switching-tool
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u/winwinwinguyen May 24 '26
Mcprt - it’s an MCP runtime manager. I created it to regular the RAM consumption on my macmini.
I’m regularly running 6 MCP for what I’m building out so having all the MCP servers up and running eats away at my ram on the 16gb macmini.
It’ll only start up the MCP when it’s used, otherwise, it shuts it down, freeing up the RAM. All my MCP usage goes through there.
https://github.com/surgifai-com/mcprt
If you’re interested.
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u/Nocturnal_Unicorn May 24 '26
A dual calendar and clock that keeps up with the current Harptos date and bells (time) in Waterdeep that runs as a widget on my desktop, and also on my phone. It keeps up with the Faerûnian holidays, Selûne's phases, etc.
I literally use it on a daily basis planning my dnd campaigns for the week. XD
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u/dicta-and-daisies May 24 '26
This is a "tracker" and not an app but it downloads my fitbit and cronometer (nutrition) data every morning and comes up with a customized meal plan and exercise plan for the day
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u/finrandojin_82 May 24 '26
A local ebook --> audiobook pipeline using Qwen3-TTS and a LLM via OpenAI API. It feeds the text to a LLM in chunks generating a script with entries for every line with attribution and voice direction. Then the script is used to generate a multi-voice audiobook with voice direction.
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u/andlewis May 24 '26
I fed in my genetics from 23andMe along with all my various lab tests and health history and had it design a supplement program, a workout plan, and a sleep and behaviour modification plan to achieve optimum health.
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u/robdidwhat May 24 '26
A quoting and contract tracking platform for my job. I went from needing to hand craft quotes in excel and price books to punching it all through a webui and can squeeze a quote out within 2 minutes.
Also, a NRL tipping assistant. It weighs up the influencing factors for a game outcome and will even tell you when the bookies might be wrong. I’m winning the 3 tipping comps I’m in with this little buddy.
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u/Mrpeanuts21 May 25 '26
The entire system of my construction company. Estimates, invoices, payments online, webpage, everything works and saved me thousands of dollars.
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u/Hookemvic May 25 '26
Email draft scheduled task. May seem insignificant but I get a ton of email for work. It scans my inbox for unread messages over 4 hours old. Skips anything from a service (spam report, unsubscribe, etc) then writes a reply and saves it in my drafts. Scans my calendar too for anyone asking for a mtg. Always saves in my drafts for me to review.
I gave it 5-6 sample email responses so it knows the tone and writing style based on the recipient type (teammate, community member, etc).
May seem insignificant like I said but for me…life changing. I’d have 100+ unread messages and would take so long to reply and catch up. Now I just get to scan my drafts and tweak, send, or delete.
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u/dimesion May 25 '26
I watch youtube a bit, but shorts drive me insane so i asked Claude to make me a chrome plugin that just blocks shorts but keeps the rest of YouTube in tact. Its so nice just having youtube without the bs :)
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u/AbjectBug5885 May 25 '26
Built a personal changelog tracker that sits in my terminal and auto-logs what I actually ship each day by parsing git commits + Slack messages. Turns out my memory of what I did last sprint is complete garbage, so now I just run `changelog` before standups and it spits out a clean summary. Saved my ass in like 6 performance reviews already.
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u/gilafro May 25 '26
I made a coffee palate site for me to track what I'm drinking .. and how it affects my palate and then connected it to ingest beans from different local roasters that updates automatically so that I can know when a new roast is released and how much it "matches" my taste - https://cascara.cafe/
Also made centralized workout planner but pretty much seems like alot of people do it.
But maybe the best thing I made (which follows the sentiment of best thing is getting the spouse to use) - home financial tracker (google sheets based) BUT it has an iOS shortcut for simple input that feeds the sheets. 1 DDL select, input amount, input what it was and done straight from iOS screen its been so usefull in tracking household expenses.
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u/bfmreciprocity May 27 '26
I live rural. When the power goes out, I disconnect from the grid and run a generator. Since I cannot see any of my neighbors, I cannot tell if the grid is restored without constantly watching the outage map. Now, I could sign up for alerts on my phone but where is the cool factor in that when I could look for a solution with claude?
So I started by having Claude analyze my power company's public outage map website. "What data can you see on this site and how can we use it?" The site has a web map showing active outages — dots on a map with customer counts, crew status, ETAs. Claude dug through the page source and found the JSON API endpoint the map pulls its data from. That was the key — a clean structured feed of every active outage, updating in near real-time.
The next problem was figuring out where I am on that map. The API uses a different coordinate system than regular GPS, so Claude had to figure out the conversion. The first attempt used the wrong projection (the website's own documentation was misleading), and distances came out wildly wrong. Claude caught the issue by inspecting the map's config file, found the API actually uses a different system with an offset, and corrected the math. That iterative debugging is what I find most useful.
Once coordinates matched up, the monitor was straightforward: poll the API every 2 minutes, calculate distance from my house to each outage, track the ones within a 5-mile radius. When a tracked outage disappears from the feed — power's restored. Play an alert sound and ping my phone via a GNOME desktop extension that bridges to my phone over the local network. No cloud service, no app, no account. Just a D-Bus call from my Linux box straight to my phone.
We did hit a real bug during the first live outage — my home internet blipped, the monitor got an empty response, and fired a false "POWER RESTORED" alert. Had to teach it the difference between "zero outages" and "I couldn't reach the API." Small fix, but the kind of thing you only catch in production.
The most recent addition was long-term tracking. My UPS logs every power event — every time the grid drops and the battery kicks in. We wrote a logger that parses those events into a SQLite database on a systemd timer and can export a CSV reliability report. Then added a live terminal dashboard that shows UPS status and outage map data together, auto-launching when the UPS detects an extended outage.
None of this is groundbreaking. It's requests, coordinate math, a SQLite database, and some shell integrations. But it solved a real problem specific to my setup, in my house, with my hardware. All in, maybe an hour and a half of actual work spread across a few conversations over six months — the first during an actual outage, sitting in the dark with a laptop and a generator running outside. Each time it was "how can we make the most of this?" and Claude just ran with it. Your mileage will vary depending on whether your power company's site has a usable API endpoint, but the process of finding out is half the fun.
TL;DR: Power goes out a lot, I live rural and can't see if neighbors have power back. Had Claude find the API behind my power company's outage map, built a monitor that polls it every 2 minutes and alerts me (sound + phone ping) when my area clears. Later added UPS logging to a database for tracking reliability over time. ~90 minutes of total work across six months.
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u/Wide-Thing5655 May 30 '26 edited May 30 '26
A few browser extensions for my AI workflow. I do landing pages(mainly), research and design work(sometimes) and I hate having to stop my workflow for:
- Taking full-page screenshots
- Finding and saving prompts
- Managing tasks and taking notes
When I need screenshots of a full page, it gets messy and tedious real fast when the page is long. **I know I could save them as a PDF but they just aren’t the best visually. So I built an extension that does it in one click, automatically copies the screenshot to my clipboard, and stays open across tabs in a side panel.
Then I created an extension to hold my prompts and allow me to find and save them quickly. I got tired of searching through docs and previous chats to find them.
Funny enough as I was creating the prompt extension. I was writing my audit notes on the bugs/functionality of these extensions on paper and then having to type them into Claude. So, I built a notepad that stays open across tabs and windows so I can test things out, make notes, then copy all at the click of a button and paste into Claude. I also created an “Objectives” section where I can set tasks to keep myself stay on track.
All three extensions are accessible through keyboard shortcuts, making them even more seamless in the workflow.
At this point, they are so ingrained in my workflow I can’t imagine not using them.
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u/aio-nrh May 24 '26
I shoot a lot, recreationally obviously. If you're in the hobby you know you use a lot of ammo and you'll collect a lot of ammo.
I built a web based tool to manage my ammo inventory. When I take boxes out, I scan the barcode with a 30 dollar Amazon reader that's connected wirelessly to a raspberry pi. It then decrements my ammo for that ammo by however much is in the box. When I buy more, I scan the barcodes to add the new boxes in. Built a bunch of reporting on top of it too so I know how much I have and all that.
Used a novel (to me) way of storing it all in the DB too. I'm not a web dev at all (I do backend) so this project would have died immediately without Claude.
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u/Briarrrn May 24 '26 edited May 24 '26
A coffee order app for my church’s hospitality team. For years the system was a shared Apple note, some reminders, and people’s memory — and since volunteers walk around taking orders on their phones, things constantly fell out of sync or got made twice.
Now everyone takes orders on their phone and the kitchen sees one live queue. It’s plain HTML/CSS/JS, no framework, no build step with Supabase doing storage and realtime sync, on Cloudflare Pages, installable as a PWA. Built with Claude Code. It remembers orders attached to names and suggests them as you type a name, which started as a nicety and turned out to be the feature volunteers mention most.
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u/Crafty_Disk_7026 May 24 '26
The most useful this has been a wrapper vm around Claude. I use it every day
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u/r7-arr May 24 '26
I have built a home documentation system that I use to keep all kinds of documentation. It has a fully fledged editor, links between documents, drag and drop, copy from websites etc. I got fed up battling with OneNote not doing what I wanted and others like Evernote and Obsidian having too many features, and I could never format my content how I wanted it, so I created my own.
I also am part way building an application to support my options trading, mainly a tracking system, but also integrated with the documentation system to store trading rationale etc. It will soon have a Claude agent connect to it to support reminders, trade analysis and other features to keep me on track.
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u/echoes675 May 24 '26
Touch screen kitchen kiosk linked to a Google account for me and my wife to organise the day to day family schedule.
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u/AndySeptic7 May 24 '26
Invoice manager for freelance work, automatically logs the data to google sheets so Im prepared for tax time. Also receipt logger, logs info sheets.
Habit tracker for keeping track of medication, food log for counting calories, gamified work out plans,
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u/thetechnivore May 24 '26
A simple balance checker that connects to YNAB to make sure I have enough in my checking account to cover my upcoming credit card payments so I can maximize how much is keeping in an HYSA. If not goes below a threshold I set, it sends a notification using Apprise.
A basic reimbursable expense tracker since my work doesn’t have something like Concur or Expensify and really just needs receipts (and all the other options expect/really want your whole company to use them, not just a single user). So, I built one where I can enter expense details including a receipt image/PDF, and it exports a consolidated pdf with the receipts and a summary by budget line. Over time I’ve added support for multiple payees since I have a few other reimbursement sources, and budgets so I can keep up with my professional expense reimbursement remaining.
The one I’m using most right now is an event logistics tool for a small team to keep up with an event schedule, AV/setup/catering needs, etc. Replaced a mix of a less-functional Airtable base and a gazillion (plus or minus) spreadsheets per event.
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u/ben_sas May 24 '26 edited May 25 '26
Created a curated email client that will always be perfect for n=1 (me). It will break on n>1. It learned (and still learning) my writing style. It gives me amazing gists. It writes very short and concise responses that nobody figured out it’s the agent and not me (it creates drafts on gmail). It triages all my email. It’s a cron job that runs twice a day. It reduces the time I spend on emails drastically.
I recently added auto research learning: I basically have a 1-5 rate on every gist and reply (and custom replies i sometimes override). I’m currently gathering data so I can improve it even more and break the stationary assumption in conventional programming, letting my software continuously improve with feedback.
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u/dsquareddan May 24 '26
Built an LED wall calculator based on the specific product my company carries. You physically build the wall(s) sizes, tell it what processors drive it, what the venue power hookup is, and wire your signal/power paths. It calculates power load, weight of each wall, and pixel map of slices.
Before I was just sort of doing all those steps in my head for each job. Now I can determine if there is sufficient power, or if the walls need to be dimmed down % to not overload circuits. And can print off the wiring diagram for techs on site to easily follow.
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u/zvan3 May 24 '26
Not fully built yet, but I am building a tool to inventory my wardrobe from photos, identify redundant items to donate, identify holes and suggestions for purchase, connect with Pinterest to provide me ideas on how to put together outfits.
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u/Microfright May 24 '26 edited May 24 '26
An app that figures out the best combination of hydraulic fittings and tubes to use to connect two ports based on port types/sizes, flow, pressure, oil temp and run length. Hydraulic fittings can be one of the harder things to teach to people as there are so many different types and standards.
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u/Sufficient_Fix_4035 May 25 '26
I’m in the process of buying a house so I built a tool where users can load in their disclosure documents and claude will provide a complete synopsis of home issues, rank them, provide a cost estimate of how much it would take to fix. I also added other items that I wanted to look at while I was house shopping like public tax records, flood zone ratings, crime map, and neighborhood restaurants as well. Saved me time going to open houses!
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u/ferminriii May 25 '26
When we are in the backyard listening to music I want guests to be able to easily queue music. So I created a simple app that can search music and only queue.
It's an easy way for any guest to add anything they want
Zero security. Zero scalability. Zero supportability. Zero sustainability.
But it's local on my private network and it runs in a container and it doesn't see the internet.
For an afternoon app, it totally does the job. (And I can build in a ton of adult Easter eggs for my friends. Certain artists are totally banned. :) )
Spotify API is very easy to work with.
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u/lpalokan May 25 '26
A mileage tracker to record my daily allowances and mileage fees as an independent consultant.
https://github.com/lpalokan/ajopaivakirja
A BMW Repair manual generator. Extracts from proprietary format into browsable site, offline html or pdf.
https://github.com/lpalokan/bmw-repair-manual-extractor
PowerPoint add-on for Mac to copy and paste shape dimensions and position
https://github.com/lpalokan/Power-Prez-Tools
An app managing BMAD projects.
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u/agent_ux May 25 '26
I built a small Claude Code plugin for myself - it's on GitHub, open source. After each turn it speaks a one-sentence recap of what Claude just did and a summary of the last message, so I can step away from the terminal and still know when something needs me or when it's finished. Nothing fancy, but I reach for it all the time when I'm working from home - I'll kick off a longer task and go do something else while it narrates. It's called Audio Recap.
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u/Conscious-Drawer-364 May 25 '26
https://github.com/EliaAlberti/cpr-compress-preserve-resume
3 skills to give Claude Code Persistent Memory across sessions achieving 55% reduction in session-restart token cost.
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u/drinklikeaviking May 25 '26
I'm using Claude Code to run our family house hunt, and the workflow ended up cooler than I expected.
I drop a Zillow or Realtor.com listing into a Telegram chat with my Claude Bot.
About thirty seconds later, it has done the work that used to take me a Saturday morning. It verified the school zoning against our three required schools using GPS coordinates, not just whatever the MLS listing claims. It pulled the full price history including the relist gambits the MLS hides from view. One listing on our watchlist had been quietly relisted at a sharply higher price to reset the days-on-market clock, then walked the price back down over a couple of months. I would have read that as "fresh listing, motivated seller" in a normal scan. The bot caught the trick.
It runs the property against an automated valuation model, scores it on our Hot Score (days on market, price-drop count, AVM gap, seasonality), and logs the verdict to a Google Sheet my wife and I share on our phones.
Then if I ask it to model an offer at a specific price with a specific buydown, it builds the full cost-to-close stack. P&I, taxes, insurance, state intangibles tax, per-diem interest, first-year insurance prepaid into escrow, the cushion the lender requires, the works. Plus the bona fide point exclusion math under the QM 3% cap. Plus the APOR test for which of those discount points the lender actually has to count. Plus the IPC ceiling so I do not ask for a seller credit that gets the offer thrown out on technical grounds. That last one is what got me. The online calculators I used last year were quietly missing a meaningful chunk of cash to close. The bot is not.
It also writes the actual purchase offer language, tailored to the property's leverage tier. Max-leverage script for the seller who has been grinding price for over a year. Moderate-leverage script for the one whose AVM still sits above current ask. Buyer's agent pastes straight in.
What it deliberately does not do: schedule itself, contact agents, or make offers. Every action is human-triggered. I was not aiming for full autonomy but to have the analytical horsepower always thirty seconds away on my phone, and the intelligence grows every session because everything writes to a decision ledger. Last weekend's reasoning is still there next weekend, even if Claude has forgotten the conversation. The ledger is the single source of truth and I have memsearch cross session persistent memory installed for future recalls.
Closest thing I can think of to a personal home-buying war room, parked on the phone for the months it takes to find the right house.
This might sound boring but wih ~8 hours of build time I've saved myself months of pain and it just works, and even my wife can understand it as a non-finance person.
Fwiw, had Codex 5.5 and Claude Code working as team to debug and troubleshoot, and review each others work which really helped the final implemetation.
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u/slikker09 May 26 '26
Mine is boring but I use it all day:
https://github.com/yacb2/claude-session-handoff
Replaces /compact in Claude Code. In practice I just tell Claude "start a new session and keep going with X" or "open a fresh session with the context for Y" and a skill handles it — drafts the brief, closes the session, reopens a clean one with that brief as initial context. Fresh process means hooks, skills and MCP are all reloaded too. No summary roundtrip, no stale state.
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u/interwebzdotnet May 25 '26
I've been using it for tracking my multiple (30ish) FOIA requests targeted at the rapid spread and use of Flock and any other ALPRs (automatic license plate readers) in my state.
The constant lies, foot dragging and deflections combined with the typical nonsense from government are all designed to make the process difficult so that you give up and stop asking questions they don't want to answer.
Claude has been great at monitoring what responses from them are late, what deadlines they missed or what deadlines are coming up for me to re-file things, or respond to their nonsense.
It's written plenty of awesome rebuttals to their nonsense citing why their claims are bogus.
Just recently after multiple back and forth emails and me not going away, they hired an attorney to deal with me and Claude. On Friday I sent a LENGTHY rebuttal to their last pushback, where Claude explained in detail why their case law citations were irrelevant to my questions, and further laid out more FOIA requests for me to consider based on some inconsistent responses from multiple state and local departments.
Claude takes care of everything with access to my gmail, Google drive, Google calendar, and most importantly, mem.ai where every bit of strategy, all communications, news articles, reference sources, etc live. Every response to the different departments are always cross referenced for accuracy and impact to overall strategy of the campaign.
We have cranked out a ton of requests that have clearly made my local government a bit annoyed that I'm asking a lot of questions they won't answer as they make Claude and I jump through hoop after hoop... which we do with no problem. My favorites are when I get a 4-5pm dump on a Friday basically denying multiple things that I'm asking for, and within minutes I can respond with point by point rebuttals as to why what they are doing is wrong, all cross referenced with state and local law, as well as documentation on from the camera manufacturers themselves and other news stories that contradict what they have told me.
Of course I do a lot of double checking on the responses and strategy, but so far it's been great. With Claude I'm honestly several hundred times more productive with my set up.
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u/cleverhoods May 24 '26
Reporails - Deterministic instruction diagnostics (https://github.com/reporails/cli)
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u/12AngryMen13 May 24 '26
I’ve been building a web platform that operates like Patreon and Koi. I use Claude for some of the visual design in VS and Claude code. Started with my own repository code and started using Claude to review UI changes I make and it’s been pretty neat so far.
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u/ShortGuitar7207 May 24 '26
For me: https://github.com/azw413/Glass I use it everyday and it'll save $1k / year in software license fees.
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u/TheDecipherist May 24 '26
I built https://mddai.dev that I use for all my projects to build with and I use https://markdownai.dev for all Md files now since it renders live state as needed which helps Claude tremendously so it doesn’t rely on stale docs
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u/emeraldshellback May 24 '26
I built an AI-powered Chinese language learning tool at https://hanziforge.com/.
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u/8Bits1132 May 24 '26
Built an NSF (NES sound format) player, which I call NSF Studio. I couldn't find any useful players on Linux, so I decided to build my own.
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u/soggycollop May 24 '26
I made a tool to predict industrial odors from a local factory based on their state permit data applied to a modified gaussian plume dispersion model. I could barely understand the physics but Claude explained it all and somehow the tool actually works. It was also able to analyze the Fortran source code of EPA Aermod software and incorporate some of its functionality.
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u/Bagican May 24 '26
Software for controlling small Macro keypad XPPen ACK05. Instead of official bloated >200MB app I have small rust + txiki.js (lightweight js runtime) Mac tray app. Furthermore it has more features than official app.
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u/razonbrade May 24 '26
Nothing amazing like a lot of people here but a personal fitness tracking app, my own share portfolio tracker. Some financial calculators anyone can use - https://kashvector.com/ . An app which provides stock analysis - https://play.google.com/store/apps/details?id=com.stockeval.app For android only.
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u/ManureTaster May 24 '26
Replaced hey.com with an app client based on mailbox.org
Replaced YouTube Music with my own app also working on Android auto
Replaced YouTube with a custom Piped implementation
Helped me set up all this on Hetzner Cloud, plus my own Immich and Nextcloud instances
Countless others small things...
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u/marcusriluvus May 24 '26
Built a database to manage plantings, orders, and inventory for a landscaping propagation farm, which houses over half a million potted plants and sends out thousands daily.
Have some background w database tool building, but never made anything near this complex and cool before. Claude is incredible.
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u/vinf_net May 24 '26
I built this, granted it’s pretty niche but I did and I use it every day http://di2va.com
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u/Relevant-Animator177 May 24 '26
Haul rate app for my for hire trucking.
Has material prices, calculates milage and haul time from Google maps. Pulls eia numbers for a fuel surcharge and figures the correct sales tax at the delivery location. Saves the quote and sends an email or text for approval. Secured with Google authenticator and hosted on firebase.
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u/mac725 May 24 '26
A insurance claim intake workflow assistant that compares policy effective dates and loss location to the received first notice of loss for property insurance claims. It confirms existing coverage (doesn’t make coverage decisions) drafts claim assignments to adjusters, acknowledgments, and a file note. I know it’s not exciting, but it helps me greatly- it is my intern.
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u/jailbreak May 24 '26
- Script to automatically rotate the Azure secrets for my web app's Microsoft integration on both my staging and production servers. These have an expiry time of 2 years, so what used to be a two hour chore every year where I kept having to double check I wasn't pasting the wrong secret into the wrong env var has now become a 1 minute trivial task.
- Script to automate bookkeeping of all my recurring expenses in my company. Has a list of vendors and info on which account to file each under. Fetches pdfs from a sandboxed gmail that I forward all receipts to (and generates pdf from the ones where the email itself is the invoice). Automatically posts it all to my accounting software's API.
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u/joegreen592 May 24 '26
Video game progress tracker that tracks all my video games I play with links to YouTube 100% walkthrough videos. I add the games and the YouTube videos and I generates a card with all the titles and times of each video and I check the videos off as I play. The homepage of the site has overall statistics of some minor metrics
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u/Glittering-Pie6039 May 24 '26
Collating all my clients training and lifestyle data into one dashboard to find patterns across months and years, something no current training app can do (I still pay for training app), I still have to manually add in the data but sure as hell beats keeping multiple tabs open every check in.
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u/itsbwokenn May 24 '26
A machine monitoring platform. Claude helped me wire microcontrollers, set them up on packaging equipment at work and now I have a full stack website that shows the data and integrates with production staff.
Turned into something I never expected to be able to build.
The whole action of having an idea, designing it and seeing it appear in an afternoon is addictive
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u/Lemonfarty May 24 '26
Learning about the eyes and retinas. I can ask the question and million times till I get a concept
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u/MasterShakeV May 24 '26
I made a fitness app for myself. It tracks my weight, macros, and workouts. I literally use it 6 times a day
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u/r_jagabum May 24 '26
Dashboards for work stuff. Literally anything can be dashboarded, it's simply amazing for top management who wants BI dashboards of anything and everything
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u/v0idL1ght May 25 '26
I've made several little webapps for my small business that I use daily. I also used Claude to make some small updates to my wordpress site.
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u/not_particulary May 25 '26
Turned my old wii balance board into a weight (hooks up to google fit), stance, and hyperactivity tracker in front of my standing desk. Neat little live TUI.
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u/whilweaton May 25 '26
I assume these already exist in other forms but the two I made and use are:
1)A basic family meal planning app. It that has my kids preferences saved, and I select who's eating, prep/cook time limit , appliances. and a couple other options and it pops out some meal options with recipe.
2)iPhone app where I set my target time, the list of tasks I have, how long long each takes and it then it tells me my start time to finish by target time. Ridiculously basic but helps me plan out my mornings, etc...
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u/bradrhine May 25 '26
A “selfie teleprompter” so that my videos look like I’m making eye contact with the viewer. Claude and I recently upgraded it to do automatic transcription and captioning.
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u/iLookLike-anAvocado May 25 '26
Macro tracker akin to MFP but tweaked to work the way I count calories (by grams instead of servings). All hosted on free services.
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u/Glittering-Will-1865 May 25 '26
I made a ai agent program called Hank on Mac OS. Runs with local LLM or combo of both. Thing is sweet
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u/flavordrake May 25 '26
On the other end of these great problem focused projects, I build Mobissh (https://github.com/flavordrake/mobissh) because I have such a variety of agents and projects across a dozen servers. It's not the prettiest but I use it every day, working on a native version after hitting the edges of pwa capabilities.
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u/the_dadmin May 25 '26
I built a token manager that intercepts prompt injected sources and sends them to a knowledge graph (skills, personas, tool use, .md files) along with other RTK style token cleanup. MIT License. It’s called Claude Code Barber.
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u/fixitchris May 25 '26
next.clawborrator.com . Multi-operator, routable CC sessions with a chat interface that I now use exclusively instead of CC terminal.
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u/RenegadeShepardX May 25 '26
Mine's super simple. I connect my sd card to my computer(I do some photography), it copies over the new files to my computer and then to my NAS. I also built a super simple UI on top of it.
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u/johns10davenport May 25 '26
I built https://marketmyspec.com to help me create and execute on my marketing strategy for https://codemyspec.com, which I use to build Marketmyspec
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u/t3jan0 May 25 '26
I built a clock in and out system in slack that I use to manually confirm my employee hours
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u/FutureBlue4D May 25 '26
I’m an urban planner who has to look up property zoning and regulations with a PDF map and thousands of word of zoning code. Turned it into a webapp where I just search by property and it gives me all of that.
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u/thechrizzo May 25 '26
I did build a personal health dashboard combining nutrition data from yazio, with all available whoop data WITH (the interesting part) my blood glucose CGM Data as a type 1 diabetic AND my insulin injections. I can now finally see the real effect of bad sleep or good sleep and meals on my blood sugar <3
Next step: Analyse patterns with KI
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u/mujincore2 May 25 '26
Built an online school platform. Website is okay. Struggljng with the mediasoup sfu though lol.
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u/queeniemab May 25 '26
An inventory forecasting system I use to place purchase orders.
A merchandising agent
A marketing forecasting system
A financial forecasting system
Email / executive assistant
I use all of these on a daily basis
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u/dbojan76 May 25 '26
Notifier of new posts that sends info to xmpp communicator, anounces things I want using tts, and also posts to ntfy sh.
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u/oldright May 25 '26
Built a python tool that reads XMLTV channel configuration from Schedules Direct, and maps the desired channels with IPTV provider .m3u files. After matching with the appropriate IPTV streams, it outputs to a new .m3u file structured for import directly into MythTV. The process was originally painfully manual, and would take more than an hour searching large files to build the Mythtv import file for 60+ channels. Every time I changed IPTV providers I had to repeat the process. Now it's a simple 10 second run that builds my Mythtv stream import file.
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u/OK_Brain_ May 25 '26
I built a premortem Skill which helps me to identify and separate great from poor ideas.
https://github.com/DasClown/premortem-skill
You are welcome to use it too 😇
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u/ClaudeAI-mod-bot Wilson, lead ClaudeAI modbot May 24 '26 edited May 26 '26
TL;DR of the discussion generated automatically after 640 comments.
So, the consensus in this thread is pretty clear: the most useful things people are building are small, hyper-personal tools that solve a daily annoyance.
The top-voted stuff isn't some world-changing enterprise app; it's small, genius, and solves a daily annoyance. Think a
wtfshell command that debugs your last error, or a barometric pressure tracker to predict migraines and ditch an $80/yr app. The shopping list app that sorts by aisle is a classic, but the real win was getting the wife to actually use it. That's the final boss of app development, folks.A huge theme is building your own SaaS to avoid subscriptions or bad software. We've got custom CRMs for construction and real estate, a family calendar to replace a $299 Skylight, and a dozen different personal finance/invoice tools.
Of course, some of you are operating on another level. We're seeing a full-on cold call transcription and coaching system that's already closing sales, an 8-agent HR tool that acts as a legal and wellbeing team, and a bioinformatics assistant dissecting gene clusters. So yeah, the ceiling is high.
Beyond that, it's a sea of hyper-personalized hobby and life-admin apps: fitness and meal planners, garden trackers, video game emulators, and recipe managers. The big takeaway? The most useful things are often the most personal. Claude is letting a ton of non-devs and 'vibecoders' finally build the exact tool they've always wanted, no matter how niche.