# Unitio vs 單位換算 Unit Converter Pro

The clearest difference is in-app purchases: 單位換算 Unit Converter Pro at none against Unitio's 3. Unitio's advantage is iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Unitio sells 3 in-app purchases, starting at $1.99 per 7 days. 單位換算 Unit Converter Pro asks for nothing beyond the download.

## The numbers

| Metric | Unitio | 單位換算 Unit Converter Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | — |
| Size | 44 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kin Man Leung](https://appshunter.io/developer/1716597027) | [Sui Fai Law](https://appshunter.io/developer/1889201616) |

## What reviewers say

### Unitio

[App page](https://appshunter.io/ios/app/unitio-unit-converter/id6759262265)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitioPro | $1.99 | per 7 days |
| UnitioPro | $3.99 | per month |
| UnitioPro | $24.99 | per year |


### 單位換算 Unit Converter Pro

[App page](https://appshunter.io/ios/app/unit-converter-pro/id6767773648)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unitio free?

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

### Is 單位換算 Unit Converter Pro free?

單位換算 Unit Converter Pro is free to download, with no in-app purchases.

### Do Unitio or 單位換算 Unit Converter Pro have ads?

Both Unitio and 單位換算 Unit Converter Pro show ads.

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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.*