Why does the Android app ask so many permissions?

On Android 6 and over, Google made a big change when requesting special features like Bluetooth. It now requires the user to give a permission on many items.

In our indoor training apps (KETTMaps, Kinomap, BH by Kinomap, B'TWIN Training), you are asked for:

• access to your camera and files: it's one permission allowing to use the front facing camera to detect your cadence
• access to your location and Bluetooth: it's one permission allowing to use the Bluetooth module to connect to a BT fitness machine
• access to your storage: it's one permission to be able to store your login data and other settings you entered in the app

Read more on the Android Developer website