RelayRelayRelay is an OBD-II scanner for iPhone and iPad. It connects to a Bluetooth LE ELM327 adapter in your car's OBD-II port to show live engine data, read and clear fault codes, log drives and keep track of service.
Email talhabalaaj@gmail.com. Include your car's make, model and year, and the adapter you use.
Plug the adapter into the OBD-II port, usually under the dashboard by the driver's knees, and turn the ignition on. Open Relay and pick your adapter from the list. Relay works with Bluetooth LE (4.0 or newer) ELM327 adapters. Classic Bluetooth and Wi-Fi adapters aren't supported on iOS.
Tap No adapter? Simulate for now on the first screen to use the built-in Demo car. It shows simulated readings so you can try every screen.
Cars only report the data their engine computer supports. Readings your car doesn't report are hidden or left blank.