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Intervals.icu vs RunGap: catalog facts
Intervals.icu	RunGap
Free Free to use.	Freemium Free to download with paid features.
Web	iOS
Detailed fitness, fatigue and power curve analytics Separate zones and metrics per sport	Connects to around 50 fitness services and devices Exports and backs up workouts
Web only, requires an account Analytics depth can be a lot for casual users	iPhone and iPad only Closed source
Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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