Compare software

Calorimeter vs FitBook: catalog facts
Calorimeter	FitBook
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the MIT licence, with no ads.
Android	Android
Personal food database built from the foods you actually eat Scanning of purchased foods for quick entry	Barcode scanning and OpenFoodFacts search Macro tracking and weight graphs
Little documentation beyond the store description Android only	Food data depends on OpenFoodFacts coverage Focused on nutrition rather than workouts
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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