You can make your own timetable. A timetable is a table that shows train times at each station. In this app, you make a list of station, and add train with time in the station's.
In addition, app show train diagram from timetable.

Currently, this app's language is only Japanese. But now, I try to translation to English.
If you want to use this app, please follow to my twitter @kame_long and give me some comments. When I get comments, my motivation goes up.