Harry, Yes I was using my iPhone 4 internal GPS antenna. By the way, there were a few other guys at the race this weekend that used your app too. I know at least one person had success with it while walking the track. I would be willing to buy an external GPS antenna/ receiver if I could use more th...

Well, A report back from the Autocross: I ran and used LapTimer with varying degrees of success. The main problem I found is that no matter how I define the start of the Autocross track (Standing Start) I could never get it to prompt me with the "staged" message so I could initiate the acc...

I am currently having a problem with my lap timer on my iphone 4. I am currently connected to a Kiwi WiFi OBD transmitter and I am trying to record a Auto X lap test. While driving the lap I can see the Important OBD data such as RPM, throttle position, and calculated gear ratio, however when I over...

All, I have had this program now for a couple of versions and really appreciate the effort and time that Harry has put into the latest release. The Autocross mode is exactly what was missing from the software that kept me from using it. The last time that I ran his software was at my local autocross...