On-Board Diagnostics - Car application for iPhone

Car hacking nuties here is a good one:
Rev by devtoaster is a new application that runs only on iPhone or iPod touch and it allows real-time monitoring of vehicle ecu data from the obd-ii port. Obd-ii port or On-Board Diagnostic for those that don’t know is an automotive context, a generic term referring to a vehicle’s self-diagnostic and reporting capability. OBD systems give the vehicle owner or a repair technician access to state of health information for various vehicle sub-systems rev interfaces with a wifi obd-ii dongle.
If sometimes your check engine light is on or flashing indicating a malfunction or a problem might be detected, Rev is able to check the engine code, list all of the engine codes stored in the vehicle, and reset the stored codes or check engine light.
Rev can also monitor real-time; vehicle speed, rpm, fuel consumption, engine coolant temp, fuel pressure, calculated engine load, throttle position, intake manifold pressure, air intake temp, timing advance, mass air flow, fuel level, barometric pressure, evap system vapor pressure, and fuel trim.

Here is a short demo: 

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