# Image Compressor Studio vs Unit Converter

The clearest difference is ads: Image Compressor Studio at none against Unit Converter's shown. Unit Converter's advantage is update cadence (every 4 days vs monthly) and iOS requirement (13.0 vs 15.1). 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.

Image Compressor Studio ships an update monthly, Unit Converter every 4 days. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Image Compressor Studio | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Size | 22 MB | 46 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [StudyBridge LLC](https://appshunter.io/developer/1830101876) | [Takumi Kinjo](https://appshunter.io/developer/1870472112) |

## What reviewers say

### Image Compressor Studio

[App page](https://appshunter.io/ios/app/image-compressor-studio/id6751759191)

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

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-henkankun/id6758116488)

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

**In-app purchases:** none


## Frequently asked questions

### Is Image Compressor Studio free?

Image Compressor Studio is free to download, with no in-app purchases.

### Is Unit Converter free?

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

### Do Image Compressor Studio or Unit Converter have ads?

Unit Converter shows ads; Image Compressor Studio does not.

### Which is updated more often, Image Compressor Studio or Unit Converter?

Image Compressor Studio ships an update monthly, and Unit Converter every 4 days. Most recently, Image Compressor Studio was updated on October 9, 2026 and Unit Converter on October 12, 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.*