With Unity who talks and spree,
Why don't you try steadily drilling every day?

Repeated practice improves mental arithmetic, brain training and dementia prevention!
National ranking function of time attack,
Title system (complete is quite difficult!)
Other hidden mini games
Equipped with many functions!

Study history can be viewed by date, number of questions, and correct answer rate.
You can check study results.

★ It's completely free, and you can play comfortably with few ads.