Is there a OBD adapter for iPhone or other iOS devices? Yes, there is. PLX Kiwi 2 WiFi It uses WiFi signal to transmit car data instead of Bluetooth. PLX Kiwi 2 WiFi is the one of the best selling
Torque Android App
With Torque Android app, you can see all kinds of live data of your vehicle on your android smartphone, and you can check what causes check engine light to turn on. It can also use the GPS to provide tracker logs