# Calculator with 12 button vs ClearKey Calc

The clearest difference is ads: ClearKey Calc at none against Calculator with 12 button's shown. ClearKey Calc also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price 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.

## The numbers

| Metric | Calculator with 12 button | ClearKey Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Size | 42 MB | 30 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [鹏飞 陈](https://appshunter.io/developer/1891216752) |

## What reviewers say

### Calculator with 12 button

[App page](https://appshunter.io/ios/app/calculator-with-12-button/id6754877013)

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

**In-app purchases:** none


### ClearKey Calc

[App page](https://appshunter.io/ios/app/clearkey-calc/id6761746376)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator with 12 button free?

Calculator with 12 button is free to download, with no in-app purchases.

### Is ClearKey Calc free?

ClearKey Calc is free to download, with no in-app purchases.

### Do Calculator with 12 button or ClearKey Calc have ads?

Calculator with 12 button shows ads; ClearKey Calc does not.

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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.*