Rev is an application for the iPhone and iPod Touch that monitors, displays, and records real-time vehicle data. By communicating directly with your vehicle’s ECU via its OBD-II port, Rev is the first iPhone and iPod touch application to give you complete access to everything you want to know about your vehicle.
Real Time Metrics
Rev can monitor and record several vehicle metrics in real-time:
- Vehicle Speed (including 0-60 time)
- RPM
- Fuel Consumption
- Engine Coolant Temperature
- Fuel Pressure
Check Engine Light on?
Save a trip to the mechanic. Rev also reads and lists engine codes (like those responsible for your Check Engine/MIL light), and allows you to reset them as well!
Auto meets iPhone.
Rev communicates directly with your vehicle’s ECU via an OBD-II hardware device. The hardware sends your data to Rev wirelessly—you can place your iPhone or iPod touch wherever you want. See our Hardware page for all the details.
Quoted from: http://devtoaster.com/products/rev/index.html