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Endurain vs Intervals.icu: catalog facts
Endurain	Intervals.icu
Free Free and open source to self-host.	Free Free to use.
Web, Self-hosted	Web
Keeps fitness data on your own server Docker Compose examples for deployment	Detailed fitness, fatigue and power curve analytics Separate zones and metrics per sport
You must run and maintain the server yourself Smaller community than commercial fitness platforms	Web only, requires an account Analytics depth can be a lot for casual users
Self-hosted	Web application
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
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.