# Abacus Exercise — Let's practice Abacus!

> Digital abacus simulator for practicing arithmetic calculations. (iPhone/iPad app by Hirokazu Komatsu.)

- Source: https://appshunter.io/ios/app/abacus-exercise/id1523833529 (this page in markdown: same URL + `.md`)
- Developer: [Hirokazu Komatsu](https://appshunter.io/developer/1523833531)
- Category: Education, Utilities
- Price: Free
- Rating: 4.50/5 from 57 App Store ratings · 13 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 90 MB
- Languages: American English, Japanese
- Released: 2020-07-21
- Data updated: 2026-08-23
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/abacus-exercise/id1523833529/reviews.md

## What is Abacus Exercise?

This app focuses on the ease of use of the abacus on the app, and aims to realize smooth and comfortable operability.
In addition to being able to use the abacus widely on the horizontal screen, the size and position can be freely customized according to the device.

The number of digits can be used up to 15 digits, and the color and sound of the beads can also be set.

You can challenge the addition and subtraction, multiplication, division questions according to your level.

## Key features

- Customizable abacus layout
- Adjustable bead size and position
- Up to 15-digit support
- Customizable bead colors and sounds
- Addition, subtraction, multiplication, division practice
- Level-based challenges

## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/abacus-exercise/id1523833529/reviews.md

### 1/5 — 数字入力に問題あり

*2025-12-13*

数字の入力が反応しないことが多い。

### 5/5 — Loving the application

*2025-02-18*

User interface can be more friendly and minimal. Keep up the good work!

### 2/5 — 玉の反応が悪い

*2025-02-07*

玉を弾くのに親指と人差し指を使いたいのに反応しないで動かなかったり、２つ動いたりで、結局人差し指一本でしか使えない

### 5/5 — Mr Chilli

*2024-12-03, version 2.2.1*

I love this app, just a beginner but learning fast. Also using the app in conjunction with my own physical abacus. Keep up the good work.

### 1/5 — 動かない

*2024-08-19*

固まって動きませんのでアンインストールしました。

### 2/5 — うーん

*2023-08-03*

反応が悪いし数字ボタンの小ささによる無反応がひどい。

### 4/5 — よいです

*2023-05-20*

画面上でも実物を使ってもできるので重宝してます。数字のボタンが小さく押し間違えやすいので、大きくなるといいなと思いました。

### 3/5 — 珠の操作感がいまいち

*2023-05-04*

機能としてはとても楽しく、実際のそろばんを使用しての練習には持ってこいです。
しかし、アプリの中の算盤の操作感がいまいちで、動作がもっさりしています。
一番残念なのが、五珠を下げた時に一珠が全て0の方に動いてしまってそれまで計算した一珠が全て0になる症状が多発してしまい、計算が合わなくなることです。
ただ、無料でここまで使えるのはとても嬉しいですね。開発ありがとうございます。

### 5/5 — ありがとうございます！

*2023-02-19*

割り算の表示バグが直ってます！
迅速に対応していただき、心から感謝致します！

**Developer response:** 大変お待たせしてしまい申し訳ございませんでした。本日のアップデートで修正いたしましたので、ご確認いただけますでしょうか。よろしくお願いいたします。

### 5/5 — very very good app to practice abacus

*2022-12-14, version 2.1.5*

i started using this yesterday and ive improved on the abacus more than i have within the week ive been learning. really good app for practicing

## Frequently asked questions about Abacus Exercise

### What is Abacus Exercise?

Abacus Exercise is a digital abacus simulator designed for practicing arithmetic calculations. It allows users to customize the abacus layout, bead appearance, and challenge themselves with various math problems.

### What kind of math problems can I practice with Abacus Exercise?

You can practice addition, subtraction, multiplication, and division problems. The app offers challenges tailored to different skill levels, allowing for progressive learning.

### Can I customize the abacus in Abacus Exercise?

Yes, the app offers extensive customization. You can freely adjust the size and position of the abacus on the screen, and even change the color and sound of the beads to your preference.

### How many digits can the abacus in Abacus Exercise handle?

The abacus in Abacus Exercise supports up to 15 digits, providing ample capacity for complex calculations and advanced practice.

### What devices is Abacus Exercise available on?

Abacus Exercise is available on iPhones, iPads, and iPods, making it accessible for a wide range of Apple users.

### Does Abacus Exercise have ads?

Yes, Abacus Exercise contains advertisements. As a free application, it utilizes ads to support its development and operation.

### How often is Abacus Exercise updated?

The app was last updated on January 15, 2024, with version 2.2.1. This indicates regular maintenance and potential feature additions.

### What is the age rating for Abacus Exercise?

Abacus Exercise has an age rating of 4+, making it suitable for young learners and children to begin their abacus practice.

## Version history (last 5 releases)

### 2.2.1 — 2024-01-15

updated library.

### 2.1.9 — 2023-02-16

Fixed a bug that numbers are not displayed correctly in division test.

### 2.1.8 — 2023-02-09

Removed function to automatically enter an answer on the abacus.

### 2.1.5 — 2021-12-21

Fixed an issue that beads would make a sound with just a touch.

### 2.1.4 — 2021-12-17

fixed minor bugs

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## More apps by Hirokazu Komatsu

- [Camera Info](https://appshunter.io/ios/app/camera-info/id1524027808)
- [シンプル観察日記](https://appshunter.io/ios/app/id1524303935)
- [Abacus Lesson -ADD and SUB-](https://appshunter.io/ios/app/abacus-lesson-add-and-sub/id1526785916)
- [お弁当Master](https://appshunter.io/ios/app/master/id1538136139)
- [Abacus Lesson -Multiplication-](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868)

All apps by Hirokazu Komatsu: https://appshunter.io/developer/1523833531

## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*