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Quitter vs Petals: catalog facts
Quitter	Petals
Free Free and open source under the MIT license.	Free Free and open source under the AGPL-3.0 licence.
Android	Android
Tracks multiple goals and custom habits Includes milestones, journaling, and notifications	No account or sign-up Supports quitting, tolerance breaks or gradual reduction
Available as an Android app	Android only Focused solely on cannabis use
Downloadable app, Web application	Downloadable app
Open source	Open source
License: MIT	License: AGPL-3.0-or-later
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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