# Abacus 10 — An Abacus in base 10

> Digital base-10 abacus for learning arithmetic operations. (iPhone/iPad app by Karakun AG.)

- Source: https://appshunter.io/ios/app/abacus-10/id1451243098 (this page in markdown: same URL + `.md`)
- Developer: [Karakun AG](https://appshunter.io/developer/1446277680)
- Category: Education, Productivity
- Price: Free
- Rating: 2.50/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 24 MB
- Languages: American English
- Released: 2019-03-03
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/abacus-10/id1451243098/reviews.md

## What is Abacus 10?

This app is an ideal tool for learning how to operate an abacus.

For inspiration how to add, subtract, multiply, divide, and square numbers with it, have a look at https://www.youtube.com/watch?v=j32KcnfAH_o.

A base-10 abacus takes some screen space. You might want to hold your device in landscape orientation. All recent devices (size > 720 pixels) are supported.

No ads, no in-app purchases, no bells and whistles. Ideal for kids.

## Key features

- Digital abacus simulation
- Supports addition, subtraction, multiplication, division, and squaring
- Ad-free experience
- Ideal for children
- Landscape orientation recommended

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/abacus-10/id1451243098/reviews.md

### 1/5 — No iPhone app

*2020-01-03, version 1.0*

I have an iPhone 7 and the app says “sorry, your device is too small” when I try to open it.

### 4/5 — It’s almost perfect

*2019-12-27, version 1.0*

When I looked on Amazon and the App Store for an abacus, I kept finding them with 10, not 9, balls in a row and different rows had different colors. I would love it if you added a 10 ball to each row and let me choose the color of each row.  An in-app purchase of these options works for me.  I really like the size of the balls. The design is very professional looking.  
The abacus is for me, not a child.  I need it for physical therapy.  For example, my therapist wants three sets of ten with a ten second hold each time. I am 75 and lose track of all those numbers. I will use each pair of rows for the three different categories.

## Frequently asked questions about Abacus 10

### What is Abacus 10?

Abacus 10 is a digital tool that simulates a base-10 abacus. It's designed to help users learn and practice fundamental arithmetic operations like addition, subtraction, multiplication, and division.

### What operations can I perform with Abacus 10?

You can use Abacus 10 to learn and practice addition, subtraction, multiplication, division, and squaring numbers. The app provides a visual representation for these calculations.

### Is Abacus 10 suitable for children?

Yes, Abacus 10 is ideal for kids. It offers a simple, ad-free interface without any extra features, making it a straightforward tool for young learners to grasp abacus concepts.

### Does Abacus 10 have ads?

No, Abacus 10 does not contain advertisements. The app is designed to be a distraction-free learning environment for users.

### What devices does Abacus 10 support?

Abacus 10 supports iPhones and iPads. It is recommended to hold your device in landscape orientation for the best experience, especially on screens larger than 720 pixels.

### How often is Abacus 10 updated?

Abacus 10 was last updated on March 3, 2019, with version 1.0. The app has not received updates since its initial release.

### What is the user rating for Abacus 10?

Abacus 10 has a rating of 2.5 stars based on 2 user ratings. This indicates a mixed reception from its limited user base.

### Can I purchase Abacus 10?

Abacus 10 is available for free and does not include any in-app purchases. You can download and use all its features without any cost.

## Version history (last 1 release)

### 1.0 — 2019-03-03

No release notes.

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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 2026-06-01.*