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OpenNutriTracker vs Yazio: catalog facts
OpenNutriTracker	Yazio
Free Free and open source.	Freemium Free to use, with a paid subscription for additional features.
Android, iOS	Android, iOS, Web
Open source calorie tracking Privacy-focused design	Food logging by photo, barcode or manual entry Built-in fasting timers with 16:8, 5:2 and 6:1 plans
Fewer features than large commercial food trackers Smaller food database than commercial services	Closed-source service AI photo estimates may need manual correction
Downloadable app	Downloadable app, Web application
Open 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.