The mobile chess interface and game to use in android. Droifish is robust  has extensive PGN & analysis support  and has useful features. I find myself converting many .cbh files to pgn in Chessbase and using them in Droidfish for study and analysis. Obviously this app is not for the casual player. Although you can add more unessential features such as kibitzer etc. (a la Chessbase)  what makes the Droidfish highly efficient is that the developer has thoughtfully chosen the most productive features for a mobile implementation. It will no doubt continue to get better due to the dedication and the developer's desire to provide us with a high quality mobile chess game that-unfairly-does not even ask us for donation. I for one  very much appreciate his work. I can play  study analyze productively. Considering that eye catching graphics do not have anything to do with chess  it is simply the most complete chess game for android. Fantastic!