# Mental Math vs 九九できた

The clearest difference is in-app purchases: 九九できた at none against Mental Math's 3. Mental Math's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Mental Math sells 3 in-app purchases, starting at $3.99 per month. 九九できた asks for nothing beyond the download.

## The numbers

| Metric | Mental Math | 九九できた |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/mental-math-calmenta/id6790559635/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 73 MB | 28 MB |
| Requires iOS | **16.0** | 17.2 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HelloProg](https://appshunter.io/developer/1866892083) | [hiroki sugimoto](https://appshunter.io/developer/951321800) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-calmenta/id6790559635)

This app transforms mental math practice into an engaging game. Solve calculations by writing answers directly on the screen, track progress with badges and records, and enjoy a child-friendly, ad-free experience with parental controls.

**Highlights:** Finger-based answer input, Timed calculation challenges, Multiple math operations, Progress tracking with badges, Parental controls and profiles, Ad-free and no data collection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Abonnement annuel | $9.99 | per year |
| Premium à vie | $22.99 | one-time |


### 九九できた

[App page](https://appshunter.io/ios/app/id6798515294)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math free?

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

### Is 九九できた free?

九九できた is free to download, with no in-app purchases.

### Do Mental Math or 九九できた have ads?

Neither Mental Math nor 九九できた 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.*