OK i do agree with you that the mpg, hp and torque are off BUT everything else from what i have seen has been on. Even if your using the mpg guage it will tell you what mpg you are getting at that very moment and you can pretty much guess or average it in your head. I like it.SO I disagree and I think it was well worth the 60 bucks I paid for the app and the scanner. Just for the simple fact that I like to work on my truck. I have had way to many mechanics try and steal money from me and do things the wrong way. I like the scanner cuz I can diagnose the problem myself. The app tells me what codes are on the computer and I can fix them...