RidingAngle is a motorcycle video recording app that enables you to record video clips, GPS position, and lean angle simultaneously. It also provides record duration, real-time lean angle, and maximum left and right lean angles.

It is a trial version, so there are some restrictions.

It is suitable for smart phones, but the speed and angle are calculated via GPS, so it is more accurate than if you were to use the GPS on your motorcycle.

Note: To use the app, you need to find an appropriate phone holder and fix it on the body of the bike. You also need to make the bike stand straight and use the "Calibrate" function of the app to adjust the leveling of the phone.