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Cookbook vs openCook: catalog facts
Cookbook	openCook
Freemium All features are free; automatic synchronization across devices costs a small fee.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS, Linux, Android, Web	Android, Self-hosted
Imports MealMaster and RezKonv recipe files Runs on desktop, Android and in a browser	Works fully offline without an account Turns cookbook photos into recipes
Device sync is a paid add-on Closed source	Android only Sharing requires running your own server
Downloadable app, Web application	Downloadable app, Self-hosted
Closed source	Open source
License: Proprietary	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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