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Do The Thing vs Trayzero: catalog facts
Do The Thing	Trayzero
Free Free and open source under the GPL-3.0.	Free Free and open source under the GPL 3.0.
Android	Android
Fully local with no account Seven task types including randomized-interval tasks	Designed around the GTD workflow Capture button on every screen and capture from the share menu
Android only Young project with a small user base	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 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.