Private Lock

Lock your phone from its movement force
New in version 1.2
- 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
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].

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Packages

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.2 (3) - Added on 2019-09-28

    This version requires Android 4.2 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • run foreground service
      Allows the app to make use of foreground services.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.

    Download APK 3.3 MiB PGP Signature

  • Version 1.1 (2) - Added on 2019-09-11

    This version requires Android 4.2 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • run foreground service
      Allows the app to make use of foreground services.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.

    Download APK 3.3 MiB PGP Signature

  • Version 1.0 (1) - Added on 2019-09-05

    This version requires Android 4.2 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • run foreground service
      Allows the app to make use of foreground services.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.

    Download APK 3.3 MiB PGP Signature