Does nothing. Waste of money.
It took quite a long time to finally connect with my OBD device and then did absolutely nothing. It reported a trouble code, but apparently has no capacity to tell you what it means and attempting to clear it does not work. None of the other features work at all - no engine data, no driving data - nothing. What did I pay for? An app with a cartoonish interface that doesnt do anything? At very least a piece of junk app like this should be free. It isnt. Yet another app to delete. DO NOT BUY.
KoowanPStark about
Engine Link - OBD II diagnosis, v5.2