# Abacus for Kids

> Digital abacus tool for teaching arithmetic and number systems. (iPhone/iPad app by 和生 周.)

- Source: https://appshunter.io/ios/app/abacus-for-kids/id442947446 (this page in markdown: same URL + `.md`)
- Developer: [和生 周](https://appshunter.io/developer/438024727)
- Category: Education, Utilities
- Price: Free
- Rating: 4.12/5 from 311 App Store ratings · 18 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 16 MB
- Languages: Arabic, Armenian, Catalan, Czech, Danish, Dutch, English, Finnish, French, German and 23 more
- Released: 2011-06-16
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/abacus-for-kids/id442947446/reviews.md

## What is Abacus for Kids?

The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes. The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere. Around the world, abaci have been used in pre-schools and elementary schools as an aid in teaching the numeral system and arithmetic.
    The Chinese abacus, known as the suànpán (算盤, lit. "Counting tray"), usually has more than seven rods. There are two beads on each rod in the upper deck and five beads each in the bottom for both decimal and hexadecimal computation. Each bead in the upper deck has a value of 5; each bead in the lower deck has a value of 1. Beads are considered counted, when moved towards the beam that separates the two decks. When 5 beads are counted in the lower deck, the result is "carried" to the upper deck; after both beads in the upper deck are counted, the result (10) is then carried to the left-most adjacent column. The right-most column is the ones column; the next adjacent to the left is the tens column; the next adjacent to the left is the hundreds column, and so on. 

    This application includes:
    1. the Basic Training
    1.1. Addition and subtraction of the const 37: add 37 for 3 times to get 111, and another 3 times to get 222, and so on. When the data is 999, continue to subtract 37 from it until it reaches 0.
    1.2. Addition and subtraction of the const 185: add 185 for 6 times to get 1110, and another 6 times to get 2220, and so on. When the data is 9990, continue to subtract 185 from it until it reaches 0.
    1.3. Addition and subtraction of the const 625: add 625 for 16 times to get 10000, and another 16 times to get 20000, and so on. When the data is 62500, continue to subtract 625 from it until it reaches 0.
    1.4. Addition and subtraction of the const 16835: add 16835 for 3 times to get 50505, and another 3 times to get 101010, and so on. When the data is 1010100, continue to subtract 16835 from it until it reaches 0.
    1.5. There're other consts such as 16875 and 123456789.
    1.6. 100: add 1, 2, 3, …, 99 and 100 to get 5050 and then subtract 1, 2, 3, …, 99 and 100 to get 0.

    2. Abacus formulas
    The application will show abacus formulas to help the user after the user has beaded in the first number. The right-bottom can be pressed to toggle the hint. Abacus formulas include the Addition Tables and the Subtraction Tables can be referenced at: http://www.tux.org/~bagleyd/AbacusLee.html

    3. Abacus Tests
    The user can select Easy or Difficult tests. In the Easy mode, there are 2 or 3 digits in each number, and 4 or 5 in Difficult mode. When the user reaches the right answer, the next question will be automatically displayed.

## Key features

- Basic arithmetic training with constants
- Addition and subtraction exercises
- Digital abacus simulation
- Abacus formula hints
- Easy and difficult tests
- Number system learning aid

## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/abacus-for-kids/id442947446/reviews.md

### 5/5 — Hi

*2020-11-11, version 8.2*

Great. Want more complex problems

### 5/5 — I love it!

*2020-08-03, version 8.2*

Very easy to use! I wish it got more difficult. I would love to learn multiplication

### 1/5 — All chinese

*2020-03-30, version 8.2*

its all in chinese

### 1/5 — Won’t let you do anything but, the training.

*2019-05-12, version 8.2*

😠

### 1/5 — Get different app

*2019-01-27, version 8.2*

Doesn’t explain how to use

### 2/5 — Only exercises

*2018-09-26, version 8.2*

I was looking for an aha us that I could manipulate any way I want.

### 4/5 — Needs a little polish, but recommended

*2017-12-13, version 8.1*

Very helpful for learning the abacus by trial and error, solving the problems presented. There are some dialogs that are in Chinese while the query is in English. For example, “Are you really sure you want to switch modes?” will appear in English, but the response buttons will say “Yes” and “No” in Chinese. It would be great if there were more directions and you could easily step both forward and backward in the training mode (for example: switch from adding sequential numbers to 100 to adding a single large number multiple times and back again). But especially for a free app, this is great. Makes me think about numbers differently.

### 5/5 — Great

*2017-10-20, version 8.1*

It's free, easy to use, works great!

### 3/5 — Basic

*2017-06-02, version 8.1*

Does have sound effects! Does not really teach about it but gives user a set of problems to carry out. It would be helpful to have an undo button, or a back button when you mess up. Needs to explain about carrying digits.

### 5/5 — Good practice for the brain

*2016-12-07, version 8.1*

Good practice for the brain 
I just hope they post the diagram, and all formulas from 
Addition, subtraction, multiplication , etch

## Frequently asked questions about Abacus for Kids

### What is this app about?

This app is a digital abacus designed to help users learn arithmetic and number systems. It provides interactive training exercises, visual aids with abacus formulas, and testing modules to practice calculations.

### What kind of math exercises does it offer?

The app includes basic training with addition and subtraction of various constants, such as 37, 185, 625, and 16835. It also features exercises for adding and subtracting sequential numbers and offers tests with varying digit complexity.

### Is this app free to use?

Yes, based on the provided information, this application is available for free.

### How does the abacus formula feature work?

The app displays abacus formulas to assist users after they have entered the first number. A hint toggle allows users to view addition and subtraction tables, referencing external resources for detailed guidance.

### Who is this app intended for?

This app is primarily for children and students in pre-schools and elementary schools who are learning the numeral system and arithmetic. It serves as an aid in teaching these fundamental mathematical concepts.

## Version history (last 1 release)

### 8.2 — 2018-02-20

This app has been updated by Apple to display the Apple Watch app icon.

iPhoneX support
iOS 11 support

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## More apps by 和生 周

- [Mathematics for Kids](https://appshunter.io/ios/app/mathematics-for-kids/id438024724)

All apps by 和生 周: https://appshunter.io/developer/438024727

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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 2026-06-10.*