track fuel efficiency of your vehicle.How it works:1 Before first use, please top up the fuel tank2 Take odometer reading after top up and save it in application 3 Subsequently, just note the volume of fuel added and odometer reading4 Application automatically takes into account the previous odometer reading and calculates fuel efficiency5 Saves unlimited history along with date of calculationOptions:1 You can track in either MilesKilometers and GallonsLitres2 Clear entire data to start over