Compare software

Loop Habit Tracker vs Constanza - Good habits: catalog facts
Loop Habit Tracker	Constanza - Good habits
Free Free and open source.	Free Free and open source under the MIT license.
Android	Android
Open source with a large contributor community Focused on long-term habit building	Six schedule types and multiple reminder times Answer reminders from notifications
Android only Focused on habits rather than broader health tracking	Android only Dark interface with no light mode
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 8, 2026

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