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Calisthenics Memory vs Strong: catalog facts
Calisthenics Memory	Strong
Free Free and open source under the GPL-3.0.	Freemium Free accounts, with a paid Strong PRO tier for progress tracking.
Android	Android, iOS
Exercises and training methods are fully customizable Workout planning with day-of-week repeats	Simple, fast logging of sets and workouts Available on iOS and Android
Android only Focused on bodyweight training rather than general fitness	Detailed progress charts require Strong PRO Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-only	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.