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Google Tasks vs Karui ToDo: catalog facts
Google Tasks	Karui ToDo
Free Free with a Google account.	Free Free and open source under the GPL-3.0 licence.
Android, iOS, Web	Android
Built into Gmail and Google Calendar Syncs across web and mobile	Tiny APK of about 124 kB Never connects to the internet
Requires a Google account Few features compared with dedicated task managers	Android only Basic task list rather than a full project manager
Downloadable app, Web application, Hosted service	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Account needed	No account needed
Not stated if it 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.