A free app for Android, by MTR Corporation Limited.

A cross-border train service between Hong Kong and the Mainland. The service offers a convenient, easy, and safe way to travel. You can enjoy the service on either the Hong Kong side or the Mainland side. The app is free and is compatible with Android.

The Hong Kong side

The app will provide a convenient way to travel between Hong Kong and the Mainland. You can choose to travel by train or by bus. You can also search for the fare and time table to various stations.

The Mainland side

This is the most popular option. You can find the station and search for the fare and time table to various stations.