暗算ランカー(インド式脳トレ)

Improve your mental arithmetic skills in a fun way!
This app is a mental arithmetic practice app using Indian-style double-digit multiplication. Practice three different patterns in order to efficiently hone your mental arithmetic skills.

・Try the Time Attack!
Try out 10 practice problems and see how many seconds it takes you to solve them. This app trains both speed and accuracy.

・Earn titles and level up!
Complete the practice within the set six hours to earn a title! Collect titles in order to naturally improve your mental arithmetic skills.

・Perfect for Education
Practice repeatedly like a game, making it enjoyable for elementary and junior high school students, and even adults.

・Simple and Easy-to-Use Design
Intuitive controls let you start practicing right away. No unnecessary features allow you to focus on your studies.

・Steadyly improve your mental arithmetic skills with just a little time each day!
Have fun and aim to become a "mental arithmetic master!"