# Know Abacus vs Abacus Lesson

The clearest difference is update cadence: Abacus Lesson at every 2 weeks against Know Abacus's every 2 months. Abacus Lesson also leads on rating (5.0 vs 4.7). Know Abacus's advantage is ratings volume (67 vs 14). On price, review sentiment, ads 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 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Abacus Lesson holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 67 and 14 respectively. Written reviews point the same way: 96% of Know Abacus's written reviews are positive against 100% of Abacus Lesson's.

Know Abacus ships an update every 2 months, Abacus Lesson every 2 weeks. The most recent releases landed on July 6, 2026 and September 21, 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) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868/reviews)** |
| Number of ratings | **67** | 14 |
| Positive reviews | 96.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 138 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-multiplication/id1582635868)

Learn multiplication using a virtual abacus. This app teaches a simple and fast method for calculating multiplication, emphasizing the mental calculation benefits of the abacus over digital calculators.

**Highlights:** Virtual abacus for multiplication, Simple and fast calculation methods, Focus on mental calculation skills, Step-by-step multiplication lessons, Suitable for beginners

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation Lv1 for hiding Ad | $1.99 | one-time |
| Donation Lv2 for hiding Ad | $3.99 | one-time |
| Donation Lv3 for hiding Ad | $8.99 | 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 5.0 from 14 ratings.

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

Both Know Abacus and Abacus Lesson show ads.

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

Know Abacus ships an update every 2 months, and Abacus Lesson every 2 weeks. Most recently, Know Abacus was updated on July 6, 2026 and Abacus Lesson on September 21, 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.*