App Lock
App Lock is a free, open-source privacy app for Android. Secure your sensitive apps with powerful biometric protection using AppLock. It has 905 GitHub stars and is released under the MIT license, and you can install it from F-Droid.
- Android
- Jetpack Compose
- Privacy, ad-blocking & VPN
- Actively maintained
About App Lock
Secure your sensitive apps with powerful biometric protection using AppLock! AppLock is a modern, open-source privacy tool designed to keep your sensitive apps safe. With a beautiful Material 3 Expressive interface and robust biometric security, AppLock ensures your data stays private — always on your device, never in the cloud. Features: * Material You Design: Seamlessly adapts to your system theme * Biometric Unlock: Use face unlock, fingerprint or PIN for fast, secure access * Anti-uninstall: Prevents unauthorized removal * Unlock Timer: Optional timer to keep apps unlocked for fixed time period after unlocking * No Root required: Works on all devices without root access * One-tap…
Privacy and F-Droid
F-Droid builds App Lock 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 Lock?
App Lock is a free, open-source privacy app for Android. Secure your sensitive apps with powerful biometric protection using AppLock. It has 905 GitHub stars and is released under the MIT license, and you can install it from F-Droid.
Is App Lock free and open source?
Yes. App Lock's source code is public on GitHub under the MIT 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 Lock?
You can install App Lock from F-Droid (package dev.pranav.applock); the links are on this page. Its GitHub repository also publishes releases (latest: 2.5.1).
Is App Lock still maintained?
The repository's most recent commit was on Sep 26, 2026. Its F-Droid listing was last updated on Jul 11, 2026. appsgit only lists apps whose repository had a commit in the last six months.