Amsan

Name: Amsan
Availability: InStock
Author: Yusooho

Yusooho

Contains adsIn-app purchases

Everyone

10+

Downloads

Everyone

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About this app

암산 – How Fast Is Your Brain?

A two-minute battle of instant focus!

Choose from addition, subtraction, multiplication, division, or mixed problems,
and solve as many as you can within the time limit!

How does your calculation speed rank?

Challenge players nationwide in real-time brain battles!

Updated on

Jun 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.