We show where fuel is; we don't track your tank. Suggested stops use your "Stop at least every" setting. Fuel, places and hospitals come from OpenStreetMap and can be wrong. Phone ahead on remote legs.
Pick where you start, your dates and where you sleep each night. The app works out the route, fuel stops, sunset, weather and what to watch for, for every day.
Have a route already? Use Plan from a GPX file and it's split into days for you. Trips are saved on this device only. You can change all of this later in Settings.