# Know Abacus vs Matsy Abacus

The clearest difference is ads: Matsy Abacus at none against Know Abacus's shown. Matsy Abacus also leads on update cadence (monthly vs every 2 months). Know Abacus's advantage is iOS requirement (11.0 vs 13.4). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Know Abacus sells 1 one-off in-app purchase and Matsy Abacus sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Know Abacus against 4.9 for Matsy Abacus. Both are backed by a comparable volume of ratings — 78 and 30 respectively. Written reviews are what separate them: 96% of Know Abacus's written reviews are positive against 100% of Matsy Abacus's.

Know Abacus ships an update every 2 months, Matsy Abacus monthly. Both last shipped on November 6, 2026.

## The numbers

| Metric | Know Abacus | Matsy Abacus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (78 ratings)](https://appshunter.io/ios/app/know-abacus/id641867438/reviews) | **[4.9 (30 ratings)](https://appshunter.io/ios/app/matsy-abacus/id1439473353/reviews)** |
| Number of ratings | **78** | 30 |
| Positive reviews | 96.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 66 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kittipong Mungnirun](https://appshunter.io/developer/488058533) | [IGOR ILIN](https://appshunter.io/developer/1439473352) |

## 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 |


### Matsy Abacus

[App page](https://appshunter.io/ios/app/matsy-abacus/id1439473353)

This educational app helps children master mental arithmetic through engaging games and adaptive trainers. It utilizes abacus techniques, flash cards, and proven methods to boost calculation speed, focus, and memory. Suitable for students, parents, and teachers seeking effective mental math tools.

**Highlights:** Abacus flash cards, Multiplication and division trainers, Mental math exercises, Brother/Friend techniques, 5050 mode, Speed & accuracy games, Adaptive difficulty

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mental Workout Premium Month | $2.99 | per month |
| Premium (6 months) | $8.99 | per 6 months |
| Matsy Premium Year | $9.99 | per year |
| Mental Workout Premium Year | $14.99 | per year |
| Mental Workout Premium | $7.99 | one-time |


## Frequently asked questions

### Is Know Abacus free?

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

### Is Matsy Abacus free?

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

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

Matsy Abacus is rated higher. Know Abacus averages 4.8 out of 5 from 78 ratings, while Matsy Abacus averages 4.9 from 30 ratings.

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

Know Abacus shows ads; Matsy Abacus does not.

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

Know Abacus ships an update every 2 months, and Matsy Abacus monthly. Most recently, Know Abacus was updated on November 6, 2026 and Matsy Abacus on November 6, 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.*