# Mental Math Quiz vs KEMIplay

The clearest difference is price: Mental Math Quiz at Free against KEMIplay's $0.99. Mental Math Quiz also leads on update cadence (every 4 days vs every 6 weeks). KEMIplay's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Mental Math Quiz is free to download; KEMIplay costs $0.99 up front. Mental Math Quiz sells 1 in-app purchase, starting at $4.99 per 7 days. KEMIplay asks for nothing beyond the download.

Mental Math Quiz ships an update every 4 days, KEMIplay every 6 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mental Math Quiz | KEMIplay |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (700 ratings)](https://appshunter.io/ios/app/mental-math-quiz-math-mole/id1498107670/reviews)** | — |
| Number of ratings | **700** | — |
| Positive reviews | 81.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 788 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [蒋国 颜](https://appshunter.io/developer/600610078) | [KEMIplay Oy](https://appshunter.io/developer/1895606899) |

## What reviewers say

### Mental Math Quiz

[App page](https://appshunter.io/ios/app/mental-math-quiz-math-mole/id1498107670)

Practice mental math skills through engaging games and challenges. Earn rewards and unlock new content as you improve your math fluency. Offers customized daily practice and adaptive learning to help users of all ages master math facts.

**Highlights:** Gamified math practice, Reward system with rare cards, Customized daily practice, Adaptive learning from errors, Progress tracking and rewards chest, Family-friendly math games

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlimited | $4.99 | per 7 days |

**What reviewers like**

- 🚀 Fun and educational
- 👍 Helps improve math skills
- 💕 Motivating with stickers
- 🎨 Ability to draw answers

**What reviewers complain about**

- 💰 Paywall for higher difficulty levels
- 🐛 Handwriting recognition issues
- 🤔 Lack of customization options

**Reported bugs**

- Frequent loading issues
- Incorrect answer recognition

**Requested features**

- More difficulty levels without paywall
- Ability to focus on specific math operations
- Expanded content for older students


### KEMIplay

[App page](https://appshunter.io/ios/app/kemiplay-mathworld/id6764035080)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math Quiz free?

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

### Is KEMIplay free?

KEMIplay costs $0.99, with no in-app purchases.

### Do Mental Math Quiz or KEMIplay have ads?

Neither Mental Math Quiz nor KEMIplay shows ads.

### Which is updated more often, Mental Math Quiz or KEMIplay?

Mental Math Quiz ships an update every 4 days, and KEMIplay every 6 weeks. Most recently, Mental Math Quiz was updated on October 20, 2026 and KEMIplay on October 24, 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.*