# Unit Conversion vs KastroVPN

The clearest difference is ads: KastroVPN at none against Unit Conversion's shown. KastroVPN also leads on iOS requirement (15.1 vs 17.6). On price, in-app purchases and device support 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 | Unit Conversion | KastroVPN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Size | 55 MB | 92 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ricardo Contente](https://appshunter.io/developer/1835945159) | [AWIS Group, LLC](https://appshunter.io/developer/1580788700) |

## What reviewers say

### Unit Conversion

[App page](https://appshunter.io/ios/app/unit-conversion-pro/id6751759968)

**Features:** macOS Compatibility

**In-app purchases:** none


### KastroVPN

[App page](https://appshunter.io/ios/app/kastrovpn/id6790453647)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Conversion free?

Unit Conversion is free to download, with no in-app purchases.

### Is KastroVPN free?

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

### Do Unit Conversion or KastroVPN have ads?

Unit Conversion shows ads; KastroVPN 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.*