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Flexify vs Hevy: catalog facts
Flexify	Hevy
Free Free and open source.	Free The homepage describes Hevy as a free workout tracker.
Android	Android, iOS
Works fully offline Progress graphs and rest timers	Detailed set logging with warmup, drop and failure sets Charts, personal records and one rep max estimates
No generated training plans or coaching Small project maintained mainly by one developer	Social features may not suit people who want a private log Proprietary app
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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