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Bubble

Spirit level and ruler
New in version 3.0
Bugfixes
With Bubble you can measure angles and inclination.

Simply align one of your phone's four sides with an object or place it on a level surface to determine its orientation.

A ruler in cm and inches is also available.

Experience a user-friendly and ad-free solution with no permissions required.
  • app screenshot
  • app screenshot
  • app screenshot

Versions

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 3.0 (30) suggested Added on May 30, 2024

    This version requires Android 4.1 or newer.

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

    Permissions
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.woheller69.level.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.4 MiB PGP Signature | Build Log

  • Version 2.9 (29) - Added on May 09, 2024

    This version requires Android 4.1 or newer.

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

    Permissions
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.woheller69.level.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.4 MiB PGP Signature | Build Log

  • Version 2.8 (28) - Added on Apr 24, 2024

    This version requires Android 4.1 or newer.

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

    Permissions
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.woheller69.level.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.4 MiB PGP Signature | Build Log