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OpenTracks vs Spix: catalog facts
OpenTracks	Spix
Free Free and open source.	Free Free and open source under the AGPL-3.0, with no subscription.
Android	Android
Records GPS tracks for runs, rides and hikes Supports Bluetooth Low Energy heart rate sensors	Automatic rep counting with the camera GPS run tracking with maps
Android only No hosted sync or social features	Android only Small project by a single developer with no dedicated product page
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	No account needed
Works offline	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.