BeTrains (not the official SNCB app) is the most useful application for people travelling by Train in Belgium.

It is aimed to be faster and easier to use than the official application.

You can of course access all realtime information of all belgian trains, their position on a map, and all the timetables in a very convenient way. You will never miss a train again.

In addition, you can get all the informations and warnings from the Belgian Rail Company, and even get in touch with other people in your train by opening the chat! Meet new friends, find your lost items in the train, and enjoy your trip with a modern and user friendly application.

This application is not the official SNCB / NMBS application and is an open source alternative.
It is using the realtime information from the Public Data of Belgian train company: https://www.belgiantrain.be/en/3rd-party-services/mobility-service-providers/public-data

This data is provided via irail ( iRail is a part of Open Knowledge Belgium)
https://docs.irail.be/

You can also access freely the source code and compile it by yourself: https://github.com/iRail/BeTrains-for-Android