This is way too expensive for what it does. The Jorudan website, which is free, actually does more, in that you can pick a route based on an arrival time. With the app you can only select a departure time. [Edited to add: I see now that the app allows you to pick a route based on arrival time, first train, or last train. So 2.1 stars instead of 2]
You can choose stopover stations, but not how long you want to stop over, so that feature is pretty useless. The app does have timetables, which is nice, except they only show departure times, not arrivals, so again not so useful. The routings are not linked to timetables, and vice versa. You cant select "train only", or "Shinkansen only", or ask for the next later routing, or any other such things I hoped would be on here since theyre charging so much for it. It does what it does fine, but the website is free and does more.
Johnny Vector about Japan Transit Planner