Compare software

Tasks.org vs Trayzero: catalog facts
Tasks.org	Trayzero
Free Free and open source under the GPLv3, supported by donations.	Free Free and open source under the GPL 3.0.
Android	Android
Many sync backends, including CalDAV and EteSync Works fully offline	Designed around the GTD workflow Capture button on every screen and capture from the share menu
Desktop version is still in alpha Mainly an Android app	Android only No mention of sync between devices
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
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.