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Periodical

Menstrual/period calendar
This application calculates the days of fertility according to Knaus-Ogino. The
data can be backed up on a memory card, if present.

WARNING: It is not recommended to use this calendar to avoid pregnancy! There
are more accurate methods, like measuring the basal body temperature.

If you have any further questions or want to help translating the app, please
contact upstream.

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.

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  • Version 1.65 (89) suggested Added on 2021-02-05

    This version requires Android 5.0 or newer.

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

    Permissions
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 1.5 MiB PGP Signature | Build Log

  • Version 1.64 (88) - Added on 2021-01-07

    This version requires Android 5.0 or newer.

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

    Permissions
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 1.5 MiB PGP Signature | Build Log

  • Version 1.63 (87) - Added on 2020-12-29

    This version requires Android 5.0 or newer.

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

    Permissions
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 1.5 MiB PGP Signature | Build Log