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Tasks.org vs MainTask: catalog facts
Tasks.org	MainTask
Free Free and open source under the GPLv3, supported by donations.	Free Free and open source under GPL-3.0 or later.
Android	Android
Many sync backends, including CalDAV and EteSync Works fully offline	Intervals by days, weeks or months with advance reminders Optional checklists that reset when a task is done
Desktop version is still in alpha Mainly an Android app	Android only Small project with commit messages mostly in French
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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