App Blocker
App Blocker is a free, open-source productivity app for Android. App blocker and screen time tracker. Block apps, websites, reels and shorts. It has 1,382 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid.
- Android
- Kotlin
- Habit trackers & productivity
- Actively maintained
About App Blocker
Curbox (formerly Digipauwse) is a free and open source app blocker and screen time tracker built for digital wellbeing and a real digital detox. As an app blocker it lets you block apps, websites, reels and shorts, then watch your screen time drop and your focus come back. Block apps and websites • App and Website Blocker: block any distracting app or website completely • URL Path Blocking: block just one part of a site, like m.youtube.com/shorts, while the rest of YouTube still works • Short Form Content Blocker: shut off Instagram Reels and YouTube Shorts so the feed stops pulling you back • Tamper Protection: make it difficult to uninstall Curbox or turn off its blocking service •…
Privacy and F-Droid
F-Droid builds App Blocker from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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What is App Blocker?
App Blocker is a free, open-source productivity app for Android. App blocker and screen time tracker. Block apps, websites, reels and shorts. It has 1,382 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid.
Is App Blocker free and open source?
Yes. App Blocker's source code is public on GitHub under the GPL-3.0-or-later license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install App Blocker?
You can install App Blocker from F-Droid (package neth.iecal.curbox); the links are on this page. Its GitHub repository also publishes releases (latest: 4).
Is App Blocker still maintained?
The repository's most recent commit was on Oct 1, 2026. Its F-Droid listing was last updated on Aug 10, 2026. appsgit only lists apps whose repository had a commit in the last six months.