I did an in-app upgrade to the GrandPrix version and everything worked great. I switched phones and now only have the PetrolHead version showing up.
Would be great if somebody can please help me with getting GP working on my new phone.

Thanks !

Thanks a lot for the info Harry. I've been reading several other interesting posts on these forums - hope to share my findings once I have every thing running.

Thanks a lot for the replies - that really helps. I am looking for a good autocross setup - along with a PC based data analysis setup. The limiting factor is gathering the accelerometer data - I think >25Hz is a minimum for autocross. So a method to allow multiple data rates from sensors - while sti...

Thanks a lot Harry. Is there a specific method (filtering, averaging etc) used to down sample the data from the higher data rate sources?

Is there a way I can export multi-rate data - i.e. I noticed that when there are multiple sensors (e.g. GPS@1Hz, Accelerometer@25Hz) the exported data is down converted to 1Hz. Is this how LapTimer handles data from multiple sources? Is there a way to log (and export) data at the maximum rate suppor...