A simple no-frills period tracker

log28 is a simple no-frills period tracker.


  • Easily view cycle progress

  • Predict future periods

  • Log symptoms and activity

  • Take daily notes

  • Backup your data or move it between devices


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 0.6.0 (10) - Added on 2018-08-09

    This version requires Android 4.0.3 or newer.

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

    Download APK 7.0 MiB PGP Signature

    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.READ_EXTERNAL_STORAGE
    • android.permission.INTERNET
    • android.permission.WAKE_LOCK (?)