Lock your phone from its movement force
About this app
A simple app to automatically lock your phone based on movement force, or the acceleration to be more accurate.
Private Lock can help protect your privacy and security by monitoring the accelerometer in the background and if the threshold is breached, lock the screen.
The main use cases are if your phone is taken while you're using it, or you drop your phone. As an additional bonus, it can also help save wear and tear on your power button!
Inspired by the abandoned [https://github.com/0xFireball/PluckLockEx PluckLockEx] project, which is based on [https://github.com/SyntaxBlitz/PluckLock PluckLock].
Licensed under GPL-3.0-or-later.
What's New in v1.2
Imported from the F-Droid repository index.
- - Fix for background service < Android 8.0/Oreo
- - Add option for haptic feedback (vibration) on lock trigger
- - Reworked animation logic
- - Fix 'License' and 'Bug report' links on about page
Version history
Sep 28, 2019 · 3.3 MB · Android API 17–29 · code 3
Imported from the F-Droid repository index.
- - Fix for background service < Android 8.0/Oreo
- - Add option for haptic feedback (vibration) on lock trigger
- - Reworked animation logic
- - Fix 'License' and 'Bug report' links on about page
SHA-256 9d3940e91ea7280e98fd14b6010d61ac0438821cb32ce0d4ccc414f7310c9598
Sep 11, 2019 · 3.3 MB · Android API 17–29 · code 2
Imported from the F-Droid repository index.
- - Animation scaling issues fixed
- - Stop service correctly to fix memory leak & reduce code
- - Notification priority changed to low for Nougat and lower
- - Option added to run service when screen is off to be able to force PIN entry
- - Gradle & library updates
SHA-256 7366a9a0ddf6249af086aafd1c749fba8c966a4fed0c0ab3c19c90ed12c5521b
Sep 5, 2019 · 3.3 MB · Android API 17–28 · code 1
Imported from the F-Droid repository index.
- Initial release.
SHA-256 65620b2ced31447ae1012e9e5064d2b108e784d80c5e8dd1612e8ce76dbdbd9b
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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 com.wesaphzt.privatelock 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, 1.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Private 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 Private Lock, and a listing is removed when the evidence for it stops holding up.
Get Private Lock
Every source we list for com.wesaphzt.privatelock 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
9d3940e91ea7280e98fd14b6010d61ac0438821cb32ce0d4ccc414f7310c9598
Signing certificate
c281e442e2e058f17c0643b2ab78590a43ff5374b855b543d31908b0575309b8
Permissions Required
What each permission lets Private Lock do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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.
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