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Interval Timer (Privacy Friendly)

(SECUSO) Supports circuit training sessions and helps achieve training goals.
Privacy Friendly Interval Timer supports the user during his/her circuit training session and helps him achieve his/her training goals. In order to support the user during his training, the app provides stopwatches, which can be configured according to the user’s own training and resting phases. In addition, the app reminds the user of previously defined training sessions via a notification.

To check the user’s goals and to recognize training progress, the app offers the possibility to retrieve statistics about the training times and the calories burned in a daily, weekly or monthly overview.

This app is part of the Privacy Friendly Apps group
developed by the research group SECUSO at Karlsruhe Institute of Technology.

How does Privacy Friendly Interval Timer differ from other similar apps?

1) Minimal permissions
Privacy Friendly Internval Timer requires the persmission "Run at startup" to automatically restart the motivation notifications when the phone reboots.

For comparison: The Top Ten similar apps from the Google Play Store, require an average of 9,1 permissions (September 2017). These are for instance the permission to access accounts, permissions to access, modify or delete storage and access to networks or the internet.

2) No advertisement
Moreover, Privacy Friendly Ludo distinguishes from many other applications in the way that it completely relinquishes advertisements. Advertisement might track a user's actions. It could also shorten battery life or use mobile data.
  • 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.

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  • Version 1.3 (5) suggested Added on Oct 08, 2023

    This version requires Android 5.0 or newer.

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

    Permissions
    • show notifications
      Allows the app to show notifications
    • 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.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.

    Download APK 4.7 MiB PGP Signature | Build Log

  • Version 1.2 (4) - Added on May 09, 2020

    This version requires Android 5.0 or newer.

    It is built 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.

    Download APK 2.9 MiB PGP Signature | Build Log

  • Version 1.0.2 (2) - Added on Jun 02, 2018

    This version requires Android 5.0 or newer.

    It is built 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.

    Download APK 2.1 MiB PGP Signature | Build Log