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Fast N Fitness vs JEFIT: catalog facts
Fast N Fitness	JEFIT
Free Free and open source under the BSD-3-Clause licence.	Freemium Free to start, with paid plans and features.
Android	Android, iOS
Tracks both cardio and strength training Custom machines and exercises	Detailed custom plans with supersets, rest times and equipment Logging from phone or watch
Android only No releases published on GitHub	Some features sit behind paid plans Proprietary app
Downloadable app	Downloadable app
Open source	Closed source
License: BSD-3-Clause	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 23, 2026

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