Устный счет : Ментальная математика 1.2.2 Apk

This is not a game!
This is a good tool for developing yourself.
A simulator for counting in your mind, oral calculations for every day!
Mental mathematics for children and adults.
Flexible settings:
-Addition
-Subtraction
-Division
-Multiplication
-Intervals of numbers
-Automatic and manual switching
-Statistics (In development)
It is possible to quickly contact the developers for your suggestions!
(THIS IS A TEST VERSION! IF YOU'RE FACED WITH ERRORS, CONTACT DEVELOPERS)