GOdroid is an Android app that allows users to play the ancient game of Go against a computer opponent. The app features a user interface for GNU Go, an AI engine that plays Go at about 8 to 12 kyu strength. With GOdroid, users can choose from one of ten AI strengths, different board sizes, and adjustable handicap and Komi. The app also supports both Japanese and Chinese scoring rules.

In addition to playing against the computer, GOdroid allows users to play against a human opponent. The app also features one-touch board zoom, support of move variations, and unlimited undo/redo of moves. It highlights the last three moves made and visualizes the opponent's final territory. The app also allows users to auto save/load the current game and save/load games in sgf format. Users can share the current game via email attachment, Google Drive, or Bluetooth. Finally, the app allows users to open external .sgf files with 3rd party apps and access the English description of game rules in 'Menu -> Info -> Game rules'.

Overall, GOdroid is an excellent app for fans of the ancient game of Go. It offers a wide range of features and options to suit players of all levels and abilities.