Please find the user manual on this web page:http://www.dixdouze.com/xample/index.php/airnavigation/support#tabs-1If you have trouble with the software, please use the user manual or the support center:http://www.dixdouze.com/xample/index.php/airnavigation/support#tabs-2We are unable to contact you if you leave a comment with a specific problem, please use the support center to give us feedback:http://www.dixdouze.com/xample/index.php/airnavigation/support#tabs-2Thanks!Moving map GPS for the price of a dinner!Air Navigation for Android is a real-time aircraft navigation application with integrated flight planning. Using the GPS receiver (integrated or external) and accelerometers of the Android it can emulate different types of real IFR or VFR aircraft navigation instruments. Using the navigation plan editor, you can prepare and store navigation plans and use them in the cockpit with the moving map. It contains free maps of the entire world as well as official aviation charts for many countries. The application costs a fraction of the price of a dedicated portable aviation GPS.Worldwide databaseAir Navigation comes fully loaded with worldwide aviation waypoints (more than 160000). The database also contains airspace information for many countries. By using the database and maps, you can quickly plan your route, distance and estimated time of flight. Real aircraft instrument HSIAir Navigation imitates real aircraft instrument, gathering information from GPS to create realistic image. With Air Navigation you will not only get a moving map but also realistic images of the instrument HSI.