Harry,

I think you are putting your finger on the problem being with the GPS reception. Do you have a recommendation for an external sensor? Also, how do you charge the iPhone when hooked up to an external sensor?

I look forward to version 14.

Ola

Thank you for the fast reply. 1. In one video accelleration is right on; in another one it is slightly off. 2. Neither is timed with the movement on the map. 3. The lap timer is mostly ok. 4. GPS movements seem to come in big steps. Maybe my sampling rate is too low. What sampling rate do you recomm...

I am running Laptimer Pro v13.4. After filming and recording a lap I pushed the Overlay button. All works good, but the timing on the accellerograph and on the map display is a little off (maybe 5s late). What am I doing wrong?

Ola Wettergren
996 Twin Turbo modified