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Intervals.icu vs Endurain: catalog facts
Intervals.icu	Endurain
Free Free to use.	Free Free and open source to self-host.
Web	Web, Self-hosted
Detailed fitness, fatigue and power curve analytics Separate zones and metrics per sport	Keeps fitness data on your own server Docker Compose examples for deployment
Web only, requires an account Analytics depth can be a lot for casual users	You must run and maintain the server yourself Smaller community than commercial fitness platforms
Web application	Self-hosted
Closed source	Open 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.