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OpenNutriTracker vs FitBuddy: catalog facts
OpenNutriTracker	FitBuddy
Free Free and open source.	Free Free and open source under the GPL-3.0 licence.
Android, iOS	Android
Open source calorie tracking Privacy-focused design	Logs meals from a photo or a typed description Editable ingredients and weights with live macro recalculation
Fewer features than large commercial food trackers Smaller food database than commercial services	Calorie and macro figures are model estimates, not measurements Android only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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 October 2, 2026

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