must-have app for Tokyo visitor!

Because Tokyo subway system is so confusing for the first visitor, I worried a lot before I arrived in Tokyo. But fortunately, it is easy to find how to go to the places with this app - Tokyo Underground. It is very clean and uses same colors of subway lines. You dont have to stop to find out how to move in Subway. Calcuating routes and times is also useful. I highly recommend this app. I love it!
But Yurikamoe line and Rinkai line from Obaiba are missed. Obaiba is also famous place for a Tokyo traveller. Please update these missed lines.

TimoMJ_341 about Tokyo Metro