This simple and easy to follow GPS mileage calculator is the easiest way to keep a track of all your work mileage. A great looking, super user friendly app. Within 2 clicks you are on your way tracking your miles/km by GPS. Then simply stop and the app automatically generates an email for yourself or your accounts department, recording all your mileage against your specific project or client. You can also track personal mileage whatever you are doing. i.e. the school run.just go - tracks your movement every 5 meters to ensure correct and specific reporting data.