Abacus Lesson 4+

Change your life with abacus‪!‬

Hirokazu Komatsu

Designed for iPad

    • Free
    • Offers In-App Purchases

Screenshots

Description

356+735+195, 23×89, 5626÷58, Can you solve each in 5 sec by mental arithmetic?
The goal of this app is to learn abacus and solve these problems in mental arithmetic within 5 seconds.
All lessons of the abacus lesson series, which have been highly evaluated all over the world, are recorded. The lessons have been reworked in a more polite and easy-to-understand.
In addition, we have added unique training methods such as training focusing on finger movements and mental arithmetic training to improve mental arithmetic in order to learn abacus more efficiently.
And various improvements have been made.
- Either vertical screen or horizontal screen can be selected.
- The position and size of the abacus and window can be freely laid out.
- No ads.
- Added sound variations. Volume control can also be finely set.
- The color of the abacus can be set freely.
- Earn a trophy by achieving the goal.
- Smoother operability by optimizing the app.



◆Support web page
 https://hirokuma.blog/?p=4427

What’s New

Version 1.1.5

Updated IAP Library.
Fixed an issue that fail to verify receipts signed with sha-256

App Privacy

The developer, Hirokazu Komatsu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

More By This Developer

Abacus Lesson - Division -
Education
Abacus Lesson -Multiplication-
Education
お弁当Master
Lifestyle
Abacus Lesson -ADD and SUB-
Education
シンプル観察日記
Photo & Video
Camera Info
Developer Tools

You Might Also Like

Soroban Training
Education
Soroban Drill
Education
Abacus Simulator
Education
そろばんを1から覚える初心者のためのそろばん教室
Education
Know Abacus
Education
そろばん問題集
Education