Quite a nice app, actually.
It could use some touching up to the UI and some additional features, like more in depth graphs and the like, but after downloading and connecting to my car (no payment needed to connect and view engine codes) it works great as what I wanted it to do, a nice simple check engine code scanner- with the option to read from either the ECU or the TCM it fits my needs well.
You do have to pay $15 to unlock some additional features- but thats a bit of a pittance when you realize the power you have in your pocket now.
fourdac about
EOBD Facile: OBD 2 Car Scanner, v1.2