WorkOutDoors does not collect any information about users of the app.
Workout information is stored within the app on the iPhone, and passed on to Apple's Health and Activity apps on the iPhone. It is not stored or sent anywhere else unless specifically exported by the user from the app, or from Apple's Health system.
We use map vector tiles from Mapbox and Thunderforest, but in a totally anonymous way.
For more information contact us at firstname.lastname@example.org.