# UniTwainClient vs Image DPI Changer

The clearest difference is ads: UniTwainClient at none against Image DPI Changer's shown. UniTwainClient also leads on iOS requirement (8.0 vs 17.0). 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 | UniTwainClient | Image DPI Changer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 4 MB | 6 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Terminal Works Ltd.](https://appshunter.io/developer/597432797) | [Yuya Takamoto](https://appshunter.io/developer/1881459297) |

## What reviewers say

### UniTwainClient

[App page](https://appshunter.io/ios/app/unitwainclient/id1058871994)

**Features:** macOS Compatibility

**In-app purchases:** none


### Image DPI Changer

[App page](https://appshunter.io/ios/app/image-dpi-changer-300-dpi/id6805857978)

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

**In-app purchases:** none


## Frequently asked questions

### Is UniTwainClient free?

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

### Is Image DPI Changer free?

Image DPI Changer is free to download, with no in-app purchases.

### Do UniTwainClient or Image DPI Changer have ads?

Image DPI Changer shows ads; UniTwainClient 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.*