幽玄の間囲碁 for Android Phone is the official app for enjoying net go matches provided by The Nihon Ki-in, a public foundation in Japan. This app allows you to play against other users, watch games between other users, and view live professional go matches, just like the PC version. The app also includes a feature to solve go problems and a news section with information about go tournaments and announcements from the Japan Go Association.

With a free membership, users can try all the features for five days. After that, they can continue to use some of the features as a free member, but they can access all features by paying for a membership. The app requires Android version 5.0 or higher and a screen resolution of 320x480 or higher.

Overall, if you are a go fan and want to play, watch, and learn about go, this app is definitely worth trying out.