# Calc vs ClearKey Calc

The clearest difference is in-app purchases: ClearKey Calc at none against Calc's 1. ClearKey Calc also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Calc sells 1 one-off in-app purchase. ClearKey Calc asks for nothing beyond the download.

## The numbers

| Metric | Calc | ClearKey Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Size | 4 MB | 30 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zain Saeed Mughal](https://appshunter.io/developer/1762408320) | [鹏飞 陈](https://appshunter.io/developer/1891216752) |

## What reviewers say

### Calc

[App page](https://appshunter.io/ios/app/calc-calculator-unit-convert/id6738993634)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 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 Calc free?

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

### Is ClearKey Calc free?

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

### Do Calc or ClearKey Calc have ads?

Calc 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.*