Amazon.com: GL1 OBD-II to iPhone/iPad/iPod touch by GoPoint Technology: Electronics its a iphone app for obd 2 ports that reads check eng lights and shows mpg etc im thinking of getting one when i get the money
They've also got Bluetooth OBD signal transmitters for like $70 that you can use with a Droid app wirelessly... I'm sure they have the same wireless app for iPhone
I'd also just save the $ and get a programmer instead which reads and interprets diagnostic codes... unless yer gonna use it for friends n family's cars
