Coacher

A personal training and skateboarding coach, built by one person for his own use.

Coacher analyses the owner's own skateboarding videos, plans his training week, and reads his sleep, heart and activity data to say how ready he is to train. It runs on a private server reachable only from his own devices. It is not offered to the public, and it has no sign-up.

Google data

Coacher signs in to the owner's own Google account, read-only, to fetch his sleep, health measurements and activity from the Google Health API. How that data is handled is described in the privacy policy.