Works great!

Purchased a hikeren mini obd2 wifi from Amazon, this free version works great on my iPhone 6! Reads and Clears codes, and will show you any individual values your ecu will supply. Pro version only if you want to read more than one value at the same time, and some other extras

Thegridguy about inCarDoc OBD2 ELM327 Scanner, v1.8.2