It works to drive OBD values into the RaceChrono app! Awesome. RaceChrono is a widely used track tool for logging laps, comparing laps, and seeing real time engine values and lap times as well as playing back laps with GoPro footage and on Google Earth imagery. I tried the Carly OBD Bluetooth connector and it works great! Bonus! I suspect it would work with other apps, but RaceChrono is just the best - period.