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PetalsJournal Multilingual
Free

Free and open source under the AGPL-3.0 licence.

 Free

The F-Droid build is free and open source under GPL-3.0-only; the Google Play version may…

Android Android
  • No account or sign-up
  • Supports quitting, tolerance breaks or gradual reduction
  • Substance interaction checker and timeline
  • Information on more than 100 substances
  • Android only
  • Focused solely on cannabis use
  • Android only
Downloadable app Downloadable app
Open source Open source
License: AGPL-3.0-or-later License: GPL-3.0-only
No account needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked October 8, 2026

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