Compare software

Lifesum vs Zero: catalog facts
Lifesum	Zero
Freemium Free to use, with paid features available.	Freemium Free to download, with a paid subscription for additional features.
Android, iOS, Web	Android, iOS
Structured diet plans including keto and Mediterranean Available on mobile and the web	One-tap fasting timer Meal logging by photo or text description
Some plans and features require payment	Mobile only, no web version Less detailed nutrient tracking than full calorie counters
Downloadable app, Web application	Downloadable app
Closed 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.