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Loop Habit Tracker vs To Don't: catalog facts
Loop Habit Tracker	To Don't
Free Free and open source.	Free Free and open source under the Apache 2.0 licence.
Android	Android
Open source with a large contributor community Focused on long-term habit building	Quick entry of habits from the home screen Daily reset with a log of success rates over time
Android only Focused on habits rather than broader health tracking	Android only Narrow focus on avoiding habits rather than general tasks
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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