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Yazio vs Zero: catalog facts
Yazio	Zero
Freemium Free to use, with a paid subscription for additional features.	Freemium Free to download, with a paid subscription for additional features.
Android, iOS, Web	Android, iOS
Food logging by photo, barcode or manual entry Built-in fasting timers with 16:8, 5:2 and 6:1 plans	One-tap fasting timer Meal logging by photo or text description
Closed-source service AI photo estimates may need manual correction	Mobile only, no web version Less detailed nutrient tracking than full calorie counters
Downloadable app, Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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