I don't feel that it correctly logs you're driving. It speaks of Curves when I haven't been around a curve or speaks of maintaining speed when it's impossible to do in heavy traffic. Lowering my grade for cornering when I constantly look at the speedometer and I never go faster than 0 to 5 mph when cornering yet it claims I corner to fast. The app takes nothing into consideration when it comes to traffic. I don't feel as though the app gives a good representation of your driving.