I saw that they have a free version of Rev available, though I am sure it's not the full version. The only useful thing on it currently (since I don't have the iPhone for GPS, and no WiFi in the car for everything else) is the accelerometer. It's actually kind of cool. I will have to see if I can use it in any way. I wanted to use it for FE monitoring and for check engine codes. I found the
adapter online today... the same one that there is a link to above. $229! If it was $50 I would look into it for my wife's car... but not if it's way more than the ScanGuage that I know works...