こんたのそろばん練習アプリ

- It is abacus practice app

Version has been uploaded

- This time, contour-kun will navigate

And setting screen of problem questions timing (manual, 5 seconds, etc.)

And problem number, item number, you can set, such as whether the addition and subtraction or addition only

Please press the [Tama払 button start problem

And size of the abacus can be three stages set

- Since only a for practice, if interested in the abacus, please to practice in the abacus of genuine