Store Android app data in a private secondary location with Aer, a fork focused on external storage support.
Open source
18 alternativesAppLock
Protect Android apps and sensitive data with AppLock, an open-source app locker.
About AppLock
AppLock is an open-source Android app locker that locks selected apps behind biometric or PIN authentication. It supports fingerprint, face unlock, and PIN, with one-tap locking, an unlock timeout, real-time background protection, and anti-uninstall protection for user apps. No root is required, and the project states that all data stays on the device.
The app is distributed via F-Droid, IzzyOnDroid, and GitHub Releases. Installation or updates may be blocked by Google Play Protect because the app uses overlay permission.
Key features
- Lock selected apps on an Android device
- Authenticate with fingerprint, face unlock, or PIN
- One-tap app locking
- Unlock timeout setting
- Anti-uninstall protection for user apps
- Real-time background protection
Best for: Android users who share a device or want to limit access to specific work or personal apps.
Good for
- Open-source code under MIT License
- Works without root access
- Project states all data stays on the device
Watch out for
- Google Play Protect may block installation or updates due to overlay permission use
- Anti-uninstall protection is described for user apps
AppLock at a glance
- Website
- github.com/aload0/AppLock
- Category
- Privacy & Security › Mobile Privacy
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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JustUseAppjustuseapp.comTrackerControltrackercontrol.orgExodusreports.exodus-privacy.eu.org/enHMA-OSSgithub.com/frknkrc44/HMA-OSSSimpleLogingithub.com/simple-login/Simple-Login-Android
AppLock FAQ
Does AppLock need root access?
No, the project states no root is required.
Where is AppLock available for download?
Via F-Droid, IzzyOnDroid, and GitHub Releases, with beta builds listed separately.
What if Google Play Protect blocks installation?
The project notes this can happen because of overlay permission and suggests temporarily disabling Play Protect for installation, then re-enabling it.
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