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Tasks.org vs Quest Log: catalog facts
Tasks.org	Quest Log
Free Free and open source under the GPLv3, supported by donations.	Free Free and open source under the GPL 3.0 or later licence.
Android	Android
Many sync backends, including CalDAV and EteSync Works fully offline	Tasks stored as plain Markdown files Works offline with no account or telemetry
Desktop version is still in alpha Mainly an Android app	Android only Young project created in 2026
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	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.