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Todo vs Privacy Friendly To-Do List: catalog facts
Todo	Privacy Friendly To-Do List
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0-or-later licence.
Android	Android
Tasks and notes in one app Data stays on the device	Deadlines, reminders and subtasks per task Calendar view and urgency colours
Little public documentation No sync between devices mentioned	Android only Maintenance has moved from the original research group to a new maintainer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-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 2, 2026	Official website Full listing and sources Checked October 2, 2026

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