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fatsecret vs OpenNutriTracker: catalog facts
fatsecret	OpenNutriTracker
Freemium Free to use, with a paid Premium tier for meal plans and extra tools.	Free Free and open source.
Android, iOS, Web	Android, iOS
Free food diary and calorie tracking Available on iOS, Android and the web	Open source calorie tracking Privacy-focused design
Advanced features require a Premium subscription Focused on weight loss rather than training or sports nutrition	Fewer features than large commercial food trackers Smaller food database than commercial services
Downloadable app, Web application	Downloadable app
Closed source	Open 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.