Rev by DevToaster is an application for the iPhone and iPod Touch that allows real-time monitoring of vehicle ECU data from the OBD-II port. Rev interfaces with a WiFi OBD-II dongle. If your check ...

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To use it, just plug the TopScan into the OBD2 port of your vehicle and open the TopScan app on your phone. You can use the TopScan to clear fault codes, but it does a whole lot more than that.

then connect to an OBD APP which supports WIFI connection, then you can DIY your car's faults and master the performance of your car by various sensors' data by your Android or ios phone.