# Know Abacus vs #Learn Addition & Subtraction

The clearest difference is review sentiment: Know Abacus at 96% against #Learn Addition & Subtraction's 0%. Know Abacus also leads on rating (4.7 vs 4.4) and ratings volume (67 vs 12). On price, update cadence, 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 #Learn Addition & Subtraction sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Know Abacus holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Know Abacus has 67 ratings behind it against 12, 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 0% of #Learn Addition & Subtraction's.

Know Abacus ships an update every 2 months, #Learn Addition & Subtraction every 4 months. The most recent releases landed on July 6, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | Know Abacus | #Learn Addition & Subtraction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (67 ratings)](https://appshunter.io/ios/app/know-abacus/id641867438/reviews)** | [4.4 (12 ratings)](https://appshunter.io/ios/app/learn-addition-and-subtraction/id1468409334/reviews) |
| Number of ratings | **67** | 12 |
| Positive reviews | **96.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 19 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kittipong Mungnirun](https://appshunter.io/developer/488058533) | [R2Cute](https://appshunter.io/developer/1438988553) |

## 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 |


### #Learn Addition & Subtraction

[App page](https://appshunter.io/ios/app/learn-addition-and-subtraction/id1468409334)

This app helps children practice addition and subtraction with different difficulty levels. It features a virtual chalkboard for writing and tracking progress with stars and history logs.

**Highlights:** Addition and subtraction practice, Multiple difficulty levels (Easy to Master), Gold star rewards for completion, Virtual chalkboard for writing, Progress tracking with history

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Know Abacus free?

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

### Is #Learn Addition & Subtraction free?

#Learn Addition & Subtraction is free to download, with in-app purchases available.

### Which has better reviews, Know Abacus or #Learn Addition & Subtraction?

Know Abacus is rated higher. Know Abacus averages 4.7 out of 5 from 67 ratings, while #Learn Addition & Subtraction averages 4.4 from 12 ratings.

### Do Know Abacus or #Learn Addition & Subtraction have ads?

Both Know Abacus and #Learn Addition & Subtraction show ads.

### Which is updated more often, Know Abacus or #Learn Addition & Subtraction?

Know Abacus ships an update every 2 months, and #Learn Addition & Subtraction every 4 months. Most recently, Know Abacus was updated on July 6, 2026 and #Learn Addition & Subtraction on July 7, 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.*