Junichiro Kozuma

Get an ability to calculate from 1×1 to 19×19 by mental arithmetic!! MathMagicJunior is an epoch-mak

Get an ability to calculate from 1×1 to 19×19 by mental arithmetic!! MathMagicJuniorL is an epoch-ma

MathMagicMaster2 You will be a magician of calculation! MathMagicMaster2Lite is an epoch-making appl

MathMagicMasterLiteGet an ability to calculate by the mental calculation!!MathMagicMasterLite is an

App for memorizing many special events of Japan History.

Application to memorize name of an era of history of Japan

Ninja Math Master is a calculation game which supports Game Center. You can master double-digit mult