# Ninimaths vs 청기! 백기!

The clearest difference is in-app purchases: 청기! 백기! at none against Ninimaths's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ninimaths sells 3 one-off in-app purchases. 청기! 백기! asks for nothing beyond the download.

## The numbers

| Metric | Ninimaths | 청기! 백기! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (48 ratings)](https://appshunter.io/ios/app/ninimaths/id647989498/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 97.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 27 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ninicode](https://appshunter.io/developer/647989501) | [BAE JIN HO](https://appshunter.io/developer/1496509423) |

## What reviewers say

### Ninimaths

[App page](https://appshunter.io/ios/app/ninimaths/id647989498)

This app offers daily mental arithmetic training with customizable exercises. Track your progress through daily scores and compete with others using the ranking function. Engage in timed challenges to sharpen your calculation speed.

**Highlights:** 5 calculation modes (add, subtract, multiply, divide, mixed), Customizable number ranges (1-5 digits), Column format display, Daily score tracking and graphs, Game Center ranking, Time trial challenges

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Hamburger | $1.99 | one-time |
| Ramen | $4.99 | one-time |


### 청기! 백기!

[App page](https://appshunter.io/ios/app/id6814747922)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ninimaths free?

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

### Is 청기! 백기! free?

청기! 백기! is free to download, with no in-app purchases.

### Do Ninimaths or 청기! 백기! have ads?

Neither Ninimaths nor 청기! 백기! 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.*