Compare software

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