# Know Abacus vs Abacus

The clearest difference is rating: Know Abacus at 4.7 against Abacus's 2.6. Know Abacus also leads on update cadence (every 2 months vs every 44 months) and review sentiment (96% vs 67%). Abacus's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Know Abacus sells 1 one-off in-app purchase. Abacus asks for nothing beyond the download.

Know Abacus holds the better App Store score, 4.7 against 2.6. That said, the two scores are not equally well evidenced: Know Abacus has 67 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 96% of Know Abacus's written reviews are positive against 67% of Abacus's.

Know Abacus ships an update every 2 months, Abacus every 44 months. The most recent releases landed on July 6, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Know Abacus | Abacus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (67 ratings)](https://appshunter.io/ios/app/know-abacus/id641867438/reviews)** | [2.6 (10 ratings)](https://appshunter.io/ios/app/abacus-simple-soroban-abacus/id852935077/reviews) |
| Number of ratings | **67** | 10 |
| Positive reviews | **96.4% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 44 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 28 MB | 5 MB |
| Requires iOS | 11.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kittipong Mungnirun](https://appshunter.io/developer/488058533) | [Switt Kongdachalert](https://appshunter.io/developer/741342887) |

## What reviewers say

### Know Abacus

[App page](https://appshunter.io/ios/app/know-abacus/id641867438)

This app teaches children how to use an abacus for various math operations. It covers counting, addition, subtraction, multiplication, and division, helping to develop their mathematical abilities and brain potential. It offers multiple learning modes and customization options.

**Highlights:** Abacus counting, Addition and subtraction (1 & 2 digits), Multiplication and division (1-2 digits), Mental math practice, Review and random lessons, Customizable abacus (color, touch), Multiple languages

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Abacus

[App page](https://appshunter.io/ios/app/abacus-simple-soroban-abacus/id852935077)

This app provides a digital soroban abacus for learning and practicing calculations. It visually displays the numerical value of each column as beads are moved, aiding in mental math development. Designed for beginners, it offers a simple interface to explore the ancient calculating tool.

**Highlights:** Digital soroban abacus simulation, Visual representation of column values, Supports mental math practice, Simple swipe and shake controls, Beginner-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Know Abacus free?

Know Abacus is free to download, with in-app purchases available.

### Is Abacus free?

Abacus is free to download, with no in-app purchases.

### Which has better reviews, Know Abacus or Abacus?

Know Abacus is rated higher. Know Abacus averages 4.7 out of 5 from 67 ratings, while Abacus averages 2.6 from 10 ratings.

### Do Know Abacus or Abacus have ads?

Know Abacus shows ads; Abacus does not.

### Which is updated more often, Know Abacus or Abacus?

Know Abacus ships an update every 2 months, and Abacus every 44 months. Most recently, Know Abacus was updated on July 6, 2026 and Abacus on June 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*