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Paranoid's Pal - Privacy Lock vs App Lock: catalog facts
Paranoid's Pal - Privacy Lock	App Lock
Best for: Android users who lend their phone to others and want to limit access	Best for: Android users who share or hand over their phone and want certain apps locked
Free Provided at no cost and open source under the GPL-3.0.	Free Free and open source under the MIT license.
Android	Android
Focused on protecting data on an unlocked phone Data kept on the device according to its policy All 3 strengths for Paranoid's Pal - Privacy Lock Focused on protecting data on an unlocked phone Data kept on the device according to its policy Open source	Biometric protection for selected apps Open source alternative to ad-supported app lockers All 3 strengths for App Lock Biometric protection for selected apps Open source alternative to ad-supported app lockers Actively maintained
Little public documentation of its features Privacy policy mentions third-party services that may collect data	Android only Protects against casual access, not a substitute for device encryption
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Paranoid's Pal - Privacy Lock hardalgorithm.github.io/privacy github.com/hardalgorithm/ParanoidsPal-PrivacyLock f-droid.org/packages/com.paranoid.privacylock Catalog checked October 2, 2026	Official website Full listing and sources Sources for App Lock github.com/aload0/AppLock f-droid.org/packages/dev.pranav.applock Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.