'IgoClock' is a game clock application(App) used in Go(game). - The App has five modes of Time Controls (Sudden death, Byo-yomi, Kouryo-time and Canadian overtime, Fischer mode). - You can set up the main time, the byoyomi time, the kouryo time and the handicap. - Counting the seconds (byoyomi, kouryotime) in Japanese, English or beeps. > main time, kanadian overtime : 5min, 4min, 3min, 2min, 1min > Byoyomi time, Kouryo time : 10s, 20s, 25s, 28s 10s, 20s, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (Last period) or 30s, 40s, 50s, 55s, 58s 30s, 40s, 50s, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (Last period)