The app measures the maximum lean angle as well as the acceleration and deceleration while riding your motorbike and hold its values until it will be reset after a specific time.
Now you can figure out what your skill is. But also be careful while riding. You cant even confide the values and try to get the maximum when the street is wet for example.
Also supports the RaceBox Mini!
Apple Standard Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/