I just used the free version on my 97 ram 3500 5.9L. It will not wifi iPhone 6 connect unless engine is running. The free version doesnt display existing stored obdll codes. I can use the MIL to read odb groups with the on-off key feature. I will update this review after further testing. I like the features but giving the free version a 3 since it is not displaying existing obdll dtc. Vehicle has on/off key feature to use engine light to display obdll group codes.
Cwfinch about inCarDoc OBD2 ELM327 Scanner