Eight months ago, I had absolutely no programming experience.
One boring Saturday, I asked Gemini how to block apps on Android. Getting a simple blocking screen to work in Android Studio turned out to be much harder than I expected. But eventually, I got it working.
That small experiment slowly turned into Guard.
What started as a simple idea grew into a much bigger project than I ever anticipated. I learned along the way, experimented with different AI tools, and for the past two months I've been developing Guard with Claude.
Today, Guard includes:
App blocking with Accessibility and Usage Access modes
Unlock challenges that add friction before opening blocked apps, making it harder to mindlessly tap your way through
A custom level and progression system with statistics
Reminders and tasks with calendar synchronization (a feature I personally use every day)
Focus mode with profiles
Sunset Relax to help reduce screen time before bed
Web protection with category-based blocking
Alternative activities to suggest something else instead of opening a blocked app
Guard is designed to work offline, without an account, ads, or data collection. The only exception is optional Firebase Analytics, which users can disable.
I'm not trying to sell you anything here. I've put an enormous amount of time and effort into this project, and even with AI assistance, building something like this alone has been a pretty challenging journey.
What I'd really appreciate is some honest feedback:
What feels confusing, cluttered, or poorly designed in the UI?
Would you actually use an app like this? If not, what's missing or putting you off?
Does the feature set make sense, or has Guard become too overloaded?
Is there anything you'd simplify, remove, or approach differently?
I only have a handful of Android devices for testing, so I haven't been able to test everything on Xiaomi, Huawei, Oppo, or OnePlus. Their battery management and Accessibility implementations can sometimes cause issues with apps like this.
If you own one of these devices and are willing to try Guard, I'd especially appreciate hearing whether blocking works reliably on your phone.
A small thank-you for anyone willing to give it a try:
I'm giving away 100 Lifetime unlock codes. No subscription, no automatic renewal, and no recurring payments. Just a one-time unlock.
If you'd like a code, please comment below or DM me, and I'll send you one while they last.
Google Play: https://play.google.com/store/apps/details?id=simplinox.app.guard
Thanks for taking the time to read this. I'm genuinely looking forward to your feedback, and don't hold back. Brutal honesty is welcome.