Very accurate

I spent three days at High Plains Raceway testing various laptiming software. Hands down this app wins. I used a Tom Tom mount and amazed everyone with the accuracy. My lap times on this app were within 1/100s of the transponder times! The ability to use NMEA data must have been key. I use the timer view to improve my times; the diff to ref lap is a very useful and advanced function. With this functionality one knows exactly how effective a new line was, immediately. The UI could do with some work because the font on the diff is too small. Use the iPhone accessibility menu to invert the colors for more contrast. This app works better than some dedicated loggers. Keep up the good work!

Tenthumbd about Harry's LapTimer Rookie