A free program for Android, by Nederlandse Spoorwegen.
The app is designed to help you plan your journey on the Dutch railway. It provides information on the current status and an up-to-date prediction of the travel time. This way, you can be sure that you will be able to catch your train.
If you are looking for the best route from A to B, you can also find the best and most convenient timetable for your journey. It allows you to see the time of departure of the trains at your current location. You will also be able to find out about the current status of the line and the disruptions.