Alarm clock in train

This alarm clock is useful not only for passengers trains, but generally any ground transportation: buses, trolleybuses, trams, trains, cars and any other. In fact, this is alarm clock by distance. It's very simple, you only need to define a point (eg endpoint of your way) on the map and the distance. Once you find yourself at a predetermined distance from the point, alarm will ring immediately!Your location determined through the Internet using the phone towers, or through GPS. So you decide which channel will use the application (possibly both variants at the same time)! Directly choose not need simply turn the GPS or connect to the Internet (it should be allowed to use mobile networks with these purposes in the "Settings" -> "Location services"), the application will use everything that is included.