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FastTrack vs Fastic: catalog facts
FastTrack	Fastic
Free Free and open source under the MIT licence, with no ads or in-app purchases.	Freemium Free to download; pricing details are not stated on the homepage.
Android	Android, iOS
No ads, purchases or permissions Shows what the body is doing at each stage of a fast	Fasting timer combined with meal tracking Food scan for logging meals from a photo
Android only Not a medical app	Built around one dieting approach Pricing not stated on the homepage
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	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 October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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