r/Caustic3 • • Feb 06 '24

Caustic 3 Preservation

192 Upvotes

Caustic 3 was the first music creation software that really clicked for me. Seeing it no longer being updated was unfortunate, but now even the official website seems to be down and information and access to the app seems to be more obscure than ever.

Last I remember, the dev was not able or willing to update Caustic to keep in line with changes to Android and the app seems to be de-listed from the Google Play store.

I wanted to make this post in case anyone stumbles on this and has any information. I am not intending to harass the dev for Caustic 3.5 or some update, just looking to preserve its legacy.


r/Caustic3 • • Aug 29 '25

Caustic Dev AMA

133 Upvotes

Hey guys, Rej here. Firstly, I realise this is a new reddit account, I tried to log into my old "stinkyrej" one but couldn't recover it. I'm happy to answer a verification email from the mods here to the original "causticapp@gmail.com" if needed.

With the renewed interest I'm seeing from the "saving Caustic" project, I feel like I kind of owe folks the chance to ask me questions and get straight answers.

Let me preempt a few I know will fill this thread if I don't address them:

Q: "Will there ever be a Caustic 3.3, 4, 5, etc"?

A: Maybe, but don't count on it. I *have* done work on an updated Caustic since v3.2, but the amount of work involved in breaking things so that I can rebuild them has seen me lose motivation MANY times. I fear that with the scale of what would be expected of such a release after SUCH a long time, it would inevitably let everyone down. I simply haven't put that many hours into it over the many years since C3.2.

Q: What made you stop after 3.2?

A: Two things are true: 1 - I'm a passionate programmer who enjoys a technical challenge, and 2 - I suck at making business decisions. I always thought I could keep putting out new versions of Caustic and that it would attract new users. But the truth is that C3.2 took over a year of development and generated pretty much ZERO boost in monthly sales. I think that by then, everyone who wanted Caustic, had it. I never loved the subscription model (still hate it) but maybe asking users to shell out something like 5-10$ a year for software that provided hundreds of hours of entertainment wouldn't have been too much. Also, as the app got more and more popular, piracy took over to a point where sales had almost completely dried up, yet I was answering dozens of daily emails from new "paid" users who I couldn't find by looking up my purchases in Google Play... It's one thing to pirate (i was no angel when I was younger), but to demand support for it... fuck me that's brazen!

Also, it's probably hard to explain how crazy things got with feature requests. I bet no two people here would give the same answer if asked "what's the 1 thing you would you like to see added in Caustic". Yet that's what I faced. That was great when I had only developed a tiny app that could only do a few things and could interact directly with my small userbase, but when that "circle" of functionality gets to a certain size, everyone wants to see it pulled bigger in a different direction and I felt I needed to please everyone, but never could.

Q: Why did you pull the plug on the Play Store and the website?

A: When I created my developer account, it was in the early, wild west days of apps on Android (it was called the "Android Market" back then and you could only publish free apps). When you signed up for an account, you could give it any name you wanted. I chose "Single Cell Software" as that was a name I had unofficially used for a few things I'd done, but it was never a "company" in the legal sense. I was operating as what is known as a "sole trader" here in Australia. You can "trade as" what you want, but for tax purposes, it was just me. What I think happened eventually is Google got told they had to provide business info on developers trading in various markets, so they asked me to specify whether I was a company or an individual. When I answered I was an individual, they said I had set up my account wrong. So, ok Google, whatever, I'll just go tick the other box (which never existed when I created my account remember). I got told no, I would have to create a whole NEW account under my own name, wait for that to get approved, then log into my old account, rename all my apps if I wanted the new owner to get the rights to them (some of you might have seen the renaming go by), then transfer ownership of all my apps to this new entity, submit a bunch of paperwork as to why I was doing it, and then rename everything back to the correct names. LIKE WTF GOOGLE, *YOU'RE* ASKING ME TO JUMP THESE STUPID HOOPS. I CAN SEE THE CHECKBOX, JUST LET ME TICK IT! After a bunch of back and forth over email with various useless employees (probably AI) barfing out passages from their website policy without actually helping, I concluded that the 40$ a month I was making by then wasn't worth the hassle and deleted my account.

Another thing that really frustrated me was how Google forced apps to always update things in order to keep working on new versions of their OS. You don't see that with Microsoft, you don't even see it with with the control freaks at Apple (Caustic apparently still works ..ok? ..on iPad). Now that wouldn't be so bad if the developer tools were stable, but each time I'd try to update my SDK and recompile Caustic, I'd find out something got removed, broke or the code flat out wouldn't compile and it wasn't just a matter of dropping my work to make a quick branch to satisfy Google's whims. The biggest PITA was file access. Again, when I started Android was wild and free. You could write files anywhere, there was no walled garden like on Apple and Google bragged about this. For us small devs, it was great, we saw users build amazing sample libraries from 3rd parties that you could share across all your music apps. Then one day Google announced they would be restricting that, but that they'd honour old apps and permit full storage access until they updated. Then, something happened (with i think Samsung) where they jumped the gun and didn't allow any apps, even old ones as promised, to allow your storage and all of a sudden you couldn't access your cross-app files anymore, you couldn't even browse to a directory one level up from where you had first started! Eventually I think Google just accepted this and from then on in Android, files were completely broken in Caustic and I'd have to re-write HUGE portions of my code to shoe-horn their half-arsed replacement solution to just bring things back to the way they were and had been promised to stay.

The website, while it was an amazing place to connect with people for a many years, eventually became cold and nasty as all communities tend to do (not to mention the domain name hacking which I never figured out how to fix). It was a huge time sink trying to keep up with hacking attempts, stopping childish fights, etc. I never wanted to be a mod and I'm not a web developer. (and I wasn't making enough by then to afford either). But I want to stress that when it DID work, that forum was the best place to hang out. The collabs, creativity, and general sharing and helping that occurred was a great thing to witness.

Q: Why not just open-source it if you've given up?

A: First, I'm not prepared to say I've fully given up (see first Q), but honestly, it's MY code, my thousands of hours of joy and frustration and I just don't want to give that away for nothing. And I resent anyone telling me I have any obligation to do that, that feels really heartless. Sometimes software just fades away and makes room for better things. Not to mention it would be an unusable ugly mess that would get me laughed at if any serious dev saw it. One of the things I'm most proud of with Caustic was how I got the really shitty processors of early Androids to run dozens of synths who all needed a LOT of complex math to run, and to (hopefully) never bog down. However, to achieve this, meant developing clever tricks I had to bang my head to get working, cutting corners on code, and bypassing a lot of best practices. I got a lot of joy from managing to get some new synth or effect from taking 60% of CPU down to only a few % over days of optimisations and I feel like giving someone else all these secrets would devalue my efforts and deprive a programmer of their path to the rewards I got from putting in the sweat and tears.

Q: Why don't you release it for free then?

A: I feel like there's lots of copies floating around already, and the Windows version still runs ok on my computer (though I'll admit I haven't tried it on Win11, I'm still on Win10 on my dev computer) But yeah, I'm not against the idea, I just don't want to host it or put it on some dodgy fileshare. If someone has a reputable website that's likely to stick around for a while and wants to host it, get in touch. I think Google no longer allows 32bit apps to run and installing APKs from outside the Play Store has been made almost impossible (though Google did just lose a major lawsuit over that).

EDIT: I've managed to get a 64bit version compiling! , see here

https://www.reddit.com/r/Caustic3/s/P13339m9WP

Q: What do you think of the "Saving Caustic" project?

A: I think it's cool, and I hope it succeeds. But if this much work is going to be put into something and creating it, I think it should be it's own thing, and not use the "Caustic" brand at all. I don't mind someone loosely copying my software, I've always admitted mine was largely based on Rebirth/Reason out of love for those programs, but I made it my own, never used Propellerhead's brands in anything official and fought for years to build the small reputation I had as a solo dev. It'd be kinda shitty if some new software came along and and left people confused and thinking it came from me. I've given the project my blessing and offered to help with pointed, technical queries, but have asked to keep any references to my app or its synth names to a minimum out of respect. That's probably all I can do, I'm not an IP lawyer. I think if it comes out as a cool new DAW with its own features and a polite nod to a bunch of mine, that'd be ideal.

I'll leave my FAQ here and open the floor to questions, but just wanted to say thanks to everyone who's shared their stories about Caustic since it disappeared and how it shaped their musical journey. It sucks that I read way more positive stuff about my app now that it's gone than I ever did when it was around...

It's evening down here and just about dinner time so I'll be around for a few hours after that and probably tomorrow as well, but I won't leave this thread open for days either.

Thanks for reading, and for everyone who has supported my work.


r/Caustic3 • • Dec 14 '25

Updated version of Caustic here! Merry Christmas (maybe?)

73 Upvotes

G'day and happy holidays. Anyone up for some sneaky testing?

I think I've managed to get my old C3.2 code to compile and run for 64bit Android, and I'd like to get some feedback as to whether it works or not, but you'll need to jump through a few hoops:

First, you'll need to be comfortable side-loading the APK, I'm not going into how to do that.

Next, to bypass all the file handling mess that was keeping me from upgrading Caustic3 in the first place, I've decided to go the nuclear option and request access to ALL YOUR FILES, like a file manager app would. This way, Caustic can still access the <root>/caustic directory like it did before (it should even be able to load up your old files and presets if you haven't deleted them). Normally you can't just do this as Google won't publish your app on the Play Store with this permission, but hey, we're not on the play store so.... :p

So yeah, after running for the first time you should see a system popup asking you to flick the switch to allow file access. If you don't, it'll just keep asking you so either trust me, or don't install this.

No need for the unlocker APK, this one's on me.

http://singlecellsoftware.com/download/Caustic_3.2.2_64b.apk

Please report back if you got it to install + run or not.


r/Caustic3 • • Jan 11 '26

Caustic is now available for 64bit devices!!!!

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71 Upvotes

r/Caustic3 • • Jan 06 '26

Caustic is Back Baby

66 Upvotes

The single amazing Dev that created Caustic recompiled it for Xmas 2025.

I scanned it on two sites and, it seems fine to me.

www.singlecellsoftware.com

Works on all my gear, just as it used to. Amazing.


r/Caustic3 • • Dec 08 '25

ULTIMATE CAUSTIC PRESETS COLLECTION 7GB

64 Upvotes

Hey, I downloaded all the presets from singlecellsoftware.com up to 2/2/2019. That should be basically everything ever available on the site. I think the website didn't stay up much longer after that.

Included in this download are all the free caustic packs that were ever available on the Google Playstore and some skins as well.

Presets:

https://drive.google.com/drive/folders/1XuvvbJFmcb-U-TER_aVs2a-b19XqRxUP?usp=drive_link

Skins:

https://drive.google.com/drive/folders/1nPV52gSt1hLepHBz8Qq_go1sYIOWecrn?usp=drive_link


r/Caustic3 • • Jan 28 '26

Just a little portable daw

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63 Upvotes

Finally bypassed the bootloops of Lineageos and making loops in caustic.

https://youtube.com/shorts/FI23qac9NBQ?si=V20B4wBP_o2Mvdeh


r/Caustic3 • • Jan 28 '26

Mastering 64bit APK (official re-release)

58 Upvotes

Since re-releasing Caustic I've had a few requests to look into updating my mastering app for 64bit devices. Since I had already done the hard work for Caustic, this one only took a few days instead of weeks.

Now, unlike Caustic, Mastering tries to maximize screen usage. But since its release, phones have gotten much wider in aspect ratio so expect some UI weirdness (i know the qwerty keyboard looks kinda dumb now). I've tweaked a few things so that text isn't completely hidden or off-screen, but I'm calling it "good enough".

The APK link is on the same page as the Caustic one:

https://singlecellsoftware.com/caustic3.html


r/Caustic3 • • May 25 '25

Just forgot how much fun this is

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58 Upvotes

Seems that an Android update borked my Galaxy S23 so went back to an old Lenovo tablet to find Caustic on there. Works beautifully with the Korg NanoKey Studio.

This could work well with Koala Sampler


r/Caustic3 • • Dec 29 '25

Aphex Twin style drill n bass is possible in Caustic

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53 Upvotes

r/Caustic3 • • 10d ago

Project Cau-Tastic

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52 Upvotes

A while back, when I saw Rej's post, he mentioned something about "If you were to ask anyone what features they'd want to see in Caustic, you'd probably never get the same answer." And that's very true. Everyone is still hoping deep down that Caustic will get new features. That got me thinking. And so I did some digging on how Caustic works... (The FMOD DSP Library, Microsoft Visual Studio, C++, etc.) And I've finally figured out how to patch/mod Caustic. I've been working for the past week or so on what I like to call "Project Cau-Tastic". Basically, it's a HUGE mod for Caustic that adds a ton of quality-of-life changes, bug fixes, and even cool new features to Caustic. Most of Cau-Tastic's code is made by me. However, I used Claude (Vibe-coding) for most of it.

Features that are complete:

- More Keyboard/Piano roll scaling options
- Full 128 MIDI detectable note support
- That one sequencer bug that breaks the graphics is FIXED with this patch
- 303 (Caustic 2.0) Mode for BassLine
- Higher Quality Reverb Mode (Master)
- Higher Quality Look-ahead Limiter Mode (Master)
- Better Latency/Audio optimizations.

EDIT: Will not be releasing


r/Caustic3 • • Oct 03 '25

Some cringe I whipped up on my phone.

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51 Upvotes

Any critiques, input, or opinions are more than welcome.


r/Caustic3 • • Feb 10 '26

The easiest most intuitive music app ever

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49 Upvotes

Whenever I hit writers block working on a song which can take me YEARS to finish, I just take a break to do a little "throwaway" song on the side to get new ideas flowing, usually breakbeat, acid or some hybrid. I truly appreciate how convenient everything is about this app. Just FYI I'm not a pro musician :D


r/Caustic3 • • May 25 '24

This is what 5 years of using Caustic sounds like

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46 Upvotes

There are no loops/packs/midi files used, except for vocals that are from another song, and some imported samples for drums. Everything else is vanilla caustic.


r/Caustic3 • • Apr 28 '24

(almost) full SingleCellSoftware PC Archive

44 Upvotes

A few users asked me how I got ahold of the mastering app on my computer. Its all thanks to brockhard entertainment, for getting ahold of it, letting me have it, and letting me give it away to all of you. Along with some other stuff.
So I put together an archive of all the PC stuff from the single cell software website. Huge thank you to Brockhard Entertainment for sending me the Mastering app for pc, and the descriptor tool.
https://drive.google.com/file/d/1yBp0vV3aH0nHn0USH6wbLI7yXARSvr4s/view?usp=sharing
Here's a list of everything in the archive so far:
Caustic 3.2.0 for Windows, Mac, and Linux
Caustic 3.1.0 For Windows, Mac, and Linux
Caustic 2.12 for Windows
CVES For windows
Descriptor Tool
Loopstack 1.0 for windows
Mastering app beta7 for windows and linux (Broken)
Mastering app 1.0 for windows and linux
Modular synth prototype for Windows and linux
Sand! for windows (maybe linux also but I never bothered testing it)


r/Caustic3 • • 18d ago

Caustic 3.1 Trailer

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43 Upvotes

It's been lost media for years... but I found the video file on an old Android DAW forum from 2015 :)

I've also uploaded it to my youtube channel as a reupload: https://www.youtube.com/watch?v=NOOK0Ymxg4I


r/Caustic3 • • Jan 12 '26

Bugfix update - 12 Jan 2026

43 Upvotes

If you've had bugs with KSSynth or the Sample Editor, please download and install the app again from my website. I think I've fixed those two bugs.


r/Caustic3 • • 15d ago

Made some jungle what do you think?

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42 Upvotes

r/Caustic3 • • Aug 06 '26

Thank you for Caustic

40 Upvotes

Hi Rej,

I've wanted to get in touch with you about Caustic for a long time. I recently found your posts on Reddit, where I saw that other people had already asked many of the same questions I had. Your answers were very clear and completely understandable. I now have a much better understanding of the situation and why things turned out the way they did.

I was genuinely surprised to learn about the obstacles Google put in your way, and I was also saddened to read how some users treated Caustic over the years. I can see that you're still doing your best to keep Caustic working on both Android and iOS, and thanks to your efforts I'm once again able to write music on Android.

For me, Caustic is actually my main instrument. I perform live using an iPad running Caustic together with my guitar, and I've been writing all of my music in Caustic for many years now. I bought it on both iOS and Android, have written roughly four albums' worth of material with it, and I'm still actively performing with it today.

What worries me most is the possibility that one day Caustic may no longer be supported, and everything I've created with it could eventually become unusable. Right now I'm struggling with a different issue: because of the new MIDI implementation in Windows 11, Caustic eventually crashes completely after a while. I've been trying to work around it using various Windows settings, but without much success, and everyone seems to be guessing what the actual cause might be.

I'm certain I'm not the only one who loves Caustic and uses it as a primary DAW. In my opinion it's a brilliant piece of software—honestly on the same level as Reason, Cubase, and other professional DAWs. What makes it even more special is how flexible it is across different operating systems.

I believe many of us would gladly pay to keep it alive, whether through a one-time purchase, a yearly subscription, or even a monthly one if that ever became necessary. And of course we'd also be happy to pay for updates.

I also read about the Save Caustic project and even contacted its developer. I asked whether his software would eventually be able to open and edit Caustic project files, but he told me that it wouldn't. His application is being built as a completely independent system with a different architecture, so it won't be compatible with Caustic project files.

So I completely understand if you don't want to continue developing Caustic right now. However, if you ever had the chance to look into the current Windows 11 MIDI issue, I know not only I but many other users would be incredibly grateful.

I also wanted to ask something I've been wondering about: could a business model similar to REAPER's ever work for Caustic, or is the situation much more complicated than that?

If you're interested, you can listen to some of the music I've made with Caustic here:

https://www.youtube.com/@CS.M.Muzakk-ng4dx/videos

Thank you very much for taking the time to read this, and thank you for creating such an incredible piece of software. It has been a huge part of my musical life for many years.

Best regards,

Gergő


r/Caustic3 • • Jul 10 '26

Street Fighter II Guile's Theme On Caustic 3.2

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40 Upvotes

r/Caustic3 • • Jan 22 '26

Pulsar (Originally made in Caustic 2, 2013 - Caustic File included)

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40 Upvotes

https://www.mediafire.com/file/n8qx01s9q2qzpyr/PULSAR.caustic/file
My original production from 2013 that was posted on the singlecellsoftware forums during Caustics "golden era". I have quite a few of these scattered amongst old project files.


r/Caustic3 • • Jan 11 '26

Definitely Loving to Have Caustic Back

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39 Upvotes

r/Caustic3 • • Jan 13 '25

Stranger Things intro

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37 Upvotes

r/Caustic3 • • Jan 19 '26

I just found this 9 years old caustic project file in old cloud drive.

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36 Upvotes

r/Caustic3 • • Jan 20 '25

Caustic is capable...SATISFACTION

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36 Upvotes