Secure your sensitive apps with powerful biometric protection using AppLock!
About this app
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 protection**: Lock any app instantly * **Real-time monitoring**: Protects apps as they launch * **100% offline**: No ads, no trackers, no data collection
Perfect for:
* Privacy-conscious users wanting to secure sensitive apps * Securing banking, messaging, and social apps * Parents restricting access for children * Professionals protecting work apps
App Lock is designed to be lightweight and efficient, with minimal battery impact. It runs entirely offline, ensuring your data remains private and secure.
Built with Jetpack Compose and Material 3 for a smooth, intuitive experience. AppLock is free, open-source, and respects your privacy — always.
Source code and issue tracker: https://github.com/PranavPurwar/AppLock
Licensed under MIT, by Pranav Purwar.
What's New in v2.5.1
Imported from the F-Droid repository index.
- * fix previous passwords breaking
- * fix password screen showing again on back press
Version history
Jul 11, 2026 · 2.2 MB · Android API 26–37 · code 251
Imported from the F-Droid repository index.
- * fix previous passwords breaking
- * fix password screen showing again on back press
SHA-256 1cc169e34303ab749155bea025597f6474279a37614fb9cffcb6024685866566
Jul 10, 2026 · 2.2 MB · Android API 26–37 · code 250
Imported from the F-Droid repository index.
- - Alphanumeric passwords support by @justinschw
- - Fix biometrics crashing the app with accessibility service
- - Fix background color of overlay
- - fix accessibility menu in sound bar
SHA-256 8b11477bcdc3afcc662759c05c353520b855e8d0e32a6648b5e2d5fb09dbbd1b
May 28, 2026 · 2.2 MB · Android API 26–37 · code 243
Imported from the F-Droid repository index.
SHA-256 e8e6919502198c7356071cbcd1b10ae98bf9372d65229647a6ac317929accf36
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be dev.pranav.applock is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.5.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall App Lock first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of App Lock, and a listing is removed when the evidence for it stops holding up.
Get App Lock
Every source we list for dev.pranav.applock is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
1cc169e34303ab749155bea025597f6474279a37614fb9cffcb6024685866566
Signing certificate
af7f36023c6a7750847252e5d4d14a992b621364600705e1d8b0fe44d1ac8c81
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.