Rail Alarm app will alert you when you are about to reach the Station even without GPS

The app does not rely on GPS, so does not drain your battery. It uses an intelligent backend system that the team has built over two years. The backend has the full railway network mapped. The app alerts users even if a train is delayed.  Rail Alarm also shows the current status of the train in Google Maps and the distance to your destination.  Definitely a must have app for all train travelers.  You can download the Android version of the app here and the iOS app