# Abacus Online Course vs Mental Math Kingdom

The clearest difference is in-app purchases: Abacus Online Course at none against Mental Math Kingdom's 1. Abacus Online Course also leads on device support (3 vs 1) and iOS requirement (13 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Mental Math Kingdom sells 1 one-off in-app purchase. Abacus Online Course asks for nothing beyond the download.

## The numbers

| Metric | Abacus Online Course | Mental Math Kingdom |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Daily |
| Size | 75 MB | 13 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GINFOMATICS PRIVATE LIMITED](https://appshunter.io/developer/1798262527) | [Hiroki Sekimoto](https://appshunter.io/developer/1877884860) |

## What reviewers say

### Abacus Online Course

[App page](https://appshunter.io/ios/app/abacus-online-course/id6753885686)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mental Math Kingdom

[App page](https://appshunter.io/ios/app/mental-math-kingdom/id6787438808)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mental Math Kingdom Pro | $3.99 | one-time |


## Frequently asked questions

### Is Abacus Online Course free?

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

### Is Mental Math Kingdom free?

Mental Math Kingdom is free to download, with in-app purchases available.

### Do Abacus Online Course or Mental Math Kingdom have ads?

Neither Abacus Online Course nor Mental Math Kingdom shows ads.

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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.*