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Yazio vs Solo Forge: catalog facts
Yazio	Solo Forge
Freemium Free to use, with a paid subscription for additional features.	Free Free and open source under the GPL-3.0, with no ads.
Android, iOS, Web	Android
Food logging by photo, barcode or manual entry Built-in fasting timers with 16:8, 5:2 and 6:1 plans	Fasting, calorie, weight and workout tracking in one app No accounts, analytics or crash reporting
Closed-source service AI photo estimates may need manual correction	Android only Small, young project with a single main developer
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account 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.