Descent app, G-Force numbers seem to be accurate.
Issues:
• This app is entirely useless to check 0-60 time, it starts timing when you hit the start button, not when you start moving. You can try and hit the button at the same time, but then you have to take focus off the road. Told me 0-60 was over 20sec when in reality it was around 5.
• GPS does not activate until you start the recording, so theres a brief delay.
• Chart axis are not labeled well, making them difficult to read.
hannibal87 about BMW M Power Meter, v2.0