There is a federated application called Endurain [0] that can be self-hosted, and is compatible with Strava and Garmin Connect. Not a phone app, but a web front

There is a federated application called Endurain [0] that can be self-hosted, and is compatible with Strava and Garmin Connect. Not a phone app, but a web front-end. I don't know how well that works on mobile. [0] https://docs.endurain.com/gallery/ https://docs.endurain.com/gallery/