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Seven vs SimpleHIIT: catalog facts
Seven	SimpleHIIT
Freemium Free to download, with optional paid features.	Free Free and open source under the GPL-3.0-or-later licence.
iOS	Android
Short workouts with no equipment needed Daily challenges and achievements for motivation	Animated demonstrations for each exercise Eight exercise categories to choose from
Focused on short bodyweight sessions, not full training plans Pricing details are not stated on the homepage	Android only Focused on HIIT rather than general workout logging
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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