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Tweek vs Cozi: catalog facts
Tweek	Cozi
Free Described as free on its website.	Free Free to sign up and use.
Android, iOS, Web	Android, Web
Weekly view that resembles a paper planner Google, Outlook and Apple calendar sync	Shared calendar with color coding per family member Shared grocery lists, to-dos and recipes
Some features may require a paid upgrade No desktop apps mentioned beyond the web version	Requires an account and stores data on Cozi's servers Closed source
Downloadable app, Web application	Downloadable app, Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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