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ArizonaGT said:For iPhone: Harry's Lap Timer.
For Android: Trackmaster.
I highly recommend and external GPS with 10hz capability with any phone-based system.
Check this link, it' s a gps data collector, come with software. Used by a number of car mags to gather performance data. A quick, self contained solution.
adam81 said:I have the trackmaster for the android. For $9 you can't beat it..... I know it does a whole bunch of different data logging. Someone posted above a video with the data overlaid. I didn't know you could do that!!! I need to look into this thing more....
I think one of the best systems out there is the Traqmate. With the new interactive screen they have the system is amazing. However at $1500 it is a bit much...
I am going to look into an itouch to see if it can run harry's lap timer or the trackpro. Those two seem to be the best for phone stuff....
Way cool! This may be a good excuse for me to upgrade my BlackBerry to an Android or iPhone 4S.ArizonaGT said:Here is a video from this weekend, with Trackmaster (android) data overlaid. You can also view your acceleration and deceleration areas, as well as lateral G loadings for each lap, on your phone.
ArizonaGT said:You can also do side-by-side comparisons of yourself in different sessions, or yourself versus other drivers, assuming you have patience and some video editing software.
I can’t seem to get mine to do the overlayExigent said:Been using Harry's Lap Timer Pro for a couple of years and it works great. If you use it to shoot video as well you can overlay the track data it collects, for $ 18 you can't beat it. One word of caution- the iPhone 3G models have poor gps reception but the 4 models work fine.
ArizonaGT is right thought - an external gps device is a good idea.