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OpenNutriTracker vs FitBook: catalog facts
OpenNutriTracker	FitBook
Free Free and open source.	Free Free and open source under the MIT licence, with no ads.
Android, iOS	Android
Open source calorie tracking Privacy-focused design	Barcode scanning and OpenFoodFacts search Macro tracking and weight graphs
Fewer features than large commercial food trackers Smaller food database than commercial services	Food data depends on OpenFoodFacts coverage Focused on nutrition rather than workouts
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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