I am using Harry's Lap Timer Grand Prix on my iPhone 5S. I also use a GoPro 4 Silver.
The Harry's gives lots of data and if you pair it up with an OBD dongle it will accept some of the vehicle data. My only complaint with the harry's is the audio/sound/data don't sinc up perfectly. I may be able to tweak this in the Harry's options, just haven't played with it enough.
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2022 1SS 1LE A10 BCD WCT+PDR2014 1SS 1LE NPP RECARO SIM-SOLD1995 Z28 M6 GSC PGM-SOLD1975 NOVA COUPE 300HP 350 TH350 FLASH RED-SOLD
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