Company Kento Tanda created these great apps:
丸暗記百人一首, 厳選！スピード暗記日本史２５０, Game Clock Light, Lifelog Stamp, Natural Japanese 250 vol.1, Natural Japanese 250 vol.2, Natural Japanese 250 vol.3, A Hero Plays Train, Ribbit Frog, Speed Chin'itsu, Ira Ira Boy, 漫才エディタ, レンタル管理スタンプ, and others..
