# Soroban66 — Soroban App

> Educational app for practicing mental math skills with customizable exercises. (iPhone/iPad app by Masashi Fujishiro.)

- Source: https://appshunter.io/ios/app/soroban66/id1661734047 (this page in markdown: same URL + `.md`)
- Developer: [Masashi Fujishiro](https://appshunter.io/developer/1619460749)
- Category: Education
- Price: $3.99
- Age rating: 4+
- Requires: iOS 16.0 · 29 MB
- Languages: American English, Japanese
- Released: 2023-02-12
- Data updated: 2026-08-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/soroban66/id1661734047/reviews.md

## What is Soroban66?

○Soroban
・Free practice
Multiplication : 7 digits x 7 digits
Division : ÷ 7 digits = 7 digits
Sums : 1-digit to 10-digit 10-unit
You can challenge yourself with problems.
・Remix 5
Creation of your own personalized routines according to your level
It only takes a minute or two, so you can do it quickly and easily in your spare time!

○Dictation
Dictation of Sums. It reads off numbers, so you sum up all.
・Free
You can practice 1 to 15 digits numbers.

○Flash Anzan
Flash Anzan is a competition to add up the numbers displayed as they appear.
・Free practice
Practice in 0.01 second increments.
Difficulty adjustment based on fingering frequency.
Percentage of time to light a problem can also be adjusted!
Retry function is also available!
・Remix 5
Creation of your own personalized routines according to your level
It only takes a minute or two, so you can do it quickly and easily in your spare time!

○Timer
Reads out "Yo-i Hajime" before measurement.
Any words can be read out during measurement.

## Key features

- Multiplication and division practice
- Customizable addition exercises
- Number dictation for sums
- Flash Anzan rapid calculation
- Personalized routine creation
- Timed challenges

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/soroban66/id1661734047/reviews.md

### 5/5 — ダークモード素早い対応に感謝です

*2023-07-25*

フラッシュ暗算の答えの有無を設定できて大変便利になりました。ありがとうございました。

**Developer response:** 星5評価ありがとうございます。

フラッシュ暗算の難易度を選択する画面の右上に「詳細設定」というボタンがあるので、それを押すと画面が切り替わります。
切り替わった画面の真ん中に「答えを入力する」のトグルがありますので、それを切り替える(オフにする)と、以前と同じ仕様になります。
分かりにくいところにボタンがあり、すみません。

定期的にアップデートを実施していくつもりです。
ご意見等がございましたら、レビューやホームページのフォームから、お気軽にどうぞよろしくお願いします。

## Frequently asked questions about Soroban66

### What math skills can I practice with Soroban66?

Soroban66 allows you to practice multiplication, division, and addition. It offers customizable exercises for these core arithmetic operations, catering to various digit lengths and units.

### Can I create my own practice routines in Soroban66?

Yes, Soroban66 features a 'Remix 5' option that lets you create personalized practice routines tailored to your specific skill level and needs. This allows for focused improvement in targeted areas.

### Does Soroban66 offer any timed challenges?

Yes, Soroban66 includes a Flash Anzan mode, which is a competition to add numbers as they appear. You can practice in 0.01-second increments and adjust difficulty based on fingering frequency and percentage of time to light a problem.

### What is the price of Soroban66?

Soroban66 is a paid application with a price of $3.99. This one-time purchase grants you access to all its features.

### What devices is Soroban66 compatible with?

Soroban66 is designed for iOS devices, specifically compatible with both iPhone and iPad. It requires iOS 4.0 or later.

### How often is Soroban66 updated?

The app was last updated on January 11, 2024, indicating active development and maintenance. The latest version is 2.0.

### Is Soroban66 suitable for young children?

Soroban66 has an age rating of 4+, making it suitable for young learners. The app focuses on fundamental math skills that can be beneficial for early education.

### Does Soroban66 have ads?

No, Soroban66 does not contain advertisements. As a paid application, it offers an uninterrupted learning experience without any ad interruptions.

## Version history (last 5 releases)

### 2.0 — 2024-01-11

The general category was divided into an abacus category and a mental arithmetic category.
In flash mental arithmetic, the maximum time per mouth was 1 second, but now it can be set up to 2 seconds per mouth.

### 1.11 — 2023-11-06

A timer item has been added.
In some modes, operation is now possible with background music playing

### 1.10 — 2023-10-27

Dictation
・Beginner
has been added.

### 1.9 — 2023-10-25

Flash Anzan
・Exam
・Beginner
has been added.

### 1.8 — 2023-10-04

Change app name
Now works on Macs with Apple Silicon

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## More apps by Masashi Fujishiro

- [Soroban 66 Game](https://appshunter.io/ios/app/soroban-66-game/id1619461974)
- [Soroban 66 Teacher](https://appshunter.io/ios/app/soroban-66-teacher/id1625120301)
- [Soroban 66 Kids](https://appshunter.io/ios/app/soroban-66-kids/id6473739728)

All apps by Masashi Fujishiro: https://appshunter.io/developer/1619460749

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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 2026-08-09.*