The Innovate OT-2 ODB-II Wi-Fi interface provides a link between late model cars or trucks and an Apple iPhone or iPod Touch. The OpenTune interface allows for high-quality data display, logging, and analysis from any vehicle manufactured since 1996 and integrates with Innovate air/fuel meters and other Innovate modular tuning components.
A LogWorks Mobile "app" is available from the Apple online app store. Here you get a full-functioning performance meter, even without the option of the OT-2 OBD-II interfaces. This is modern science at its very best.