great app, but still needs some work

I am really impressed by this app, as it fills a need for the right price. I have wanted a GPS/accelerometer logger for HPDE events for the last several years, but have not been willing to fork up the $600 -$1000 this would cost. Although this app does not give the same precision and reliable performance as such a dedicated unit, it is functional enough to do what I want: compare laptimes and analyze sectors where I can improve, as well as provide data for later video overlay. I looked at several other apps, but they seemed more expensive and less functional that this one.

pros: nice realtime accelerometer view, useful GPS status information, easy export of data in a usable format, and nice viewing of individual laps.

cons: still needs work in some areas (for example, I have not been able to get the accelerometer calibration to work as intended... it never finishes the last two steps for the "drive in a straight line" and "linear braking/acceleration" component. "Force calibration" does not seem to do anything useful. My workaround has been to position the phone uncalibrated using a swivel ball mount such that both axis are zero when level and at rest, oriented pretty much vertically in portrait orientation), and it would be good if the intermediate accelerometer data was used to augment the slow GPS update rate, or at least was logged so that I could provide this correction myself. It seems from the development plan on Harrys website that this is in the works, so I am looking forward to the next update.

Keep up the good work!

kkiger about Harry's LapTimer Rookie