Drive smarter with Petrolr. Keep track of your fuel efficiency, map driving routes and habits. Petrolr doesnt need any extra hardware to work -- NO OBD REQUIRED. Just your phone. Weve used millions of lines of telemetry to build a computer model of vehicle performance. Applying that model to the data from your phones GPS and accelerometer sensors allows Petrolr to estimate your vehicles fuel economy(MPG) and performance characteristics.
Continued use of GPS running in the background can dramatically decrease battery life.