# Know Abacus vs Abacus Lesson

The clearest difference is ads: Abacus Lesson at none against Know Abacus's shown. Abacus Lesson also leads on update cadence (every 2 days vs every 2 months). Know Abacus's advantage is review sentiment (96% vs 75%). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Know Abacus sells 1 one-off in-app purchase and Abacus Lesson sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Know Abacus against 4.8 for Abacus Lesson. Both are backed by a comparable volume of ratings — 67 and 95 respectively. Written reviews are what separate them: 96% of Know Abacus's written reviews are positive against 75% of Abacus Lesson's.

Know Abacus ships an update every 2 months, Abacus Lesson every 2 days. The most recent releases landed on July 6, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Know Abacus | Abacus Lesson |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (67 ratings)](https://appshunter.io/ios/app/know-abacus/id641867438/reviews) | **[4.8 (95 ratings)](https://appshunter.io/ios/app/abacus-lesson/id1596053232/reviews)** |
| Number of ratings | 67 | **95** |
| Positive reviews | **96.4% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 153 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kittipong Mungnirun](https://appshunter.io/developer/488058533) | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) |

## 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 Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson/id1596053232)

Master mental arithmetic and abacus calculation with this comprehensive app. Learn efficient finger movements and mental math techniques to solve complex problems quickly. Enjoy a customizable and ad-free learning experience with progress tracking.

**Highlights:** Abacus lessons, Mental arithmetic training, Finger movement focus, Customizable abacus color, Screen orientation options, Trophy system for goals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all contents | $5.99 | one-time |


## Frequently asked questions

### Is Know Abacus free?

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

### Is Abacus Lesson free?

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

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

Abacus Lesson is rated higher. Know Abacus averages 4.7 out of 5 from 67 ratings, while Abacus Lesson averages 4.8 from 95 ratings.

### Do Know Abacus or Abacus Lesson have ads?

Know Abacus shows ads; Abacus Lesson does not.

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

Know Abacus ships an update every 2 months, and Abacus Lesson every 2 days. Most recently, Know Abacus was updated on July 6, 2026 and Abacus Lesson on September 27, 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.*