Best iOS app/module for logging data in Autocross?

It seems as if many apps don't support Autocross courses and they are geared more for Track Driving... Track Addict/QRacing etc.

For track driving, my favorite app is Track Addict with an XGPS160 module. It allows me to capture video and automatically creates an overlay which is interesting and fun for the viewer, but it sets the start and stop in the same location which is not ideal for AX.

I've yet to find a timer that will allow me to set a start and finish for iOs. Does anyone have any suggestions?

Thanks!

How about RaceChrono? You have the option to set your own start and finish lines and add sectors as you please.

You can set separate start and finish locations in Track Addict. Use the segment option, and then set via GPS.