# Quick mental calculation vs Calculator Game

The clearest difference is iOS requirement: Quick mental calculation at 12.0 against Calculator Game's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Quick mental calculation ships an update every 11 days, Calculator Game every 9 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Quick mental calculation | Calculator Game |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 11 days | **Every 9 days** |
| Size | 21 MB | 130 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [Hisashi Yoshizawa](https://appshunter.io/developer/1770019728) |

## What reviewers say

### Quick mental calculation

[App page](https://appshunter.io/ios/app/quick-mental-calculation/id841970890)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator Game

[App page](https://appshunter.io/ios/app/calculator-game-number-rush/id6740775860)

**In-app purchases:** none


## Frequently asked questions

### Is Quick mental calculation free?

Quick mental calculation is free to download, with no in-app purchases.

### Is Calculator Game free?

Calculator Game is free to download, with no in-app purchases.

### Do Quick mental calculation or Calculator Game have ads?

Both Quick mental calculation and Calculator Game show ads.

### Which is updated more often, Quick mental calculation or Calculator Game?

Quick mental calculation ships an update every 11 days, and Calculator Game every 9 days. Most recently, Quick mental calculation was updated on October 26, 2026 and Calculator Game on October 25, 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.*