Compare software

FastTrackFastTimes
Free

Free and open source under the MIT licence, with no ads or in-app purchases.

 Free

Free and open source under GPL-3.0.

Android Android
  • No ads, purchases or permissions
  • Shows what the body is doing at each stage of a fast
  • Supports common and custom fasting goals
  • Keeps a history of fasts and streaks
  • Android only
  • Not a medical app
  • Android only
Downloadable app Downloadable app
Open source Open source
License: MIT License: GPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.