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Fast N Fitness vs Hevy: catalog facts
Fast N Fitness	Hevy
Free Free and open source under the BSD-3-Clause licence.	Free The homepage describes Hevy as a free workout tracker.
Android	Android, iOS
Tracks both cardio and strength training Custom machines and exercises	Detailed set logging with warmup, drop and failure sets Charts, personal records and one rep max estimates
Android only No releases published on GitHub	Social features may not suit people who want a private log 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	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.