# Ultimate Unit Converter Pro vs QR Scanner

The clearest difference is in-app purchases: Ultimate Unit Converter Pro at none against QR Scanner's 5. Ultimate Unit Converter Pro also leads on update cadence (every 3 days vs every 4 weeks). QR Scanner's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. QR Scanner sells 5 in-app purchases, starting at $6.99 per 7 days. Ultimate Unit Converter Pro asks for nothing beyond the download.

Ultimate Unit Converter Pro ships an update every 3 days, QR Scanner every 4 weeks. The most recent releases landed on June 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Ultimate Unit Converter Pro | QR Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ultimate-unit-converter-pro/id6463096286/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 weeks |
| Monetization | Free | — |
| Size | 1 MB | 49 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Talal El Zeini](https://appshunter.io/developer/1521747288) | [TrafficABC Technology LIMITED](https://appshunter.io/developer/1853186473) |

## What reviewers say

### Ultimate Unit Converter Pro

[App page](https://appshunter.io/ios/app/ultimate-unit-converter-pro/id6463096286)

This utility app provides a streamlined way to perform unit conversions quickly and efficiently. It's designed to be an essential tool for users who need to make calculations on the go. Elevate your conversion experience with this powerful application.

**Highlights:** Seamless unit conversion, Quick calculations, Efficient workflow, Essential utility tool, Pro-grade experience

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Scanner

[App page](https://appshunter.io/ios/app/qr-scanner-qr-code-reader/id6755324352)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QRScanner Pro Weekly | $6.99 | per 7 days |
| Weekly Pro | $6.99 | per 7 days |
| Pro Weekly | $6.99 | per 7 days |
| QR Scanner Pro Weekly | $9.99 | per 7 days |
| Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Ultimate Unit Converter Pro free?

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

### Is QR Scanner free?

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

### Do Ultimate Unit Converter Pro or QR Scanner have ads?

Neither Ultimate Unit Converter Pro nor QR Scanner shows ads.

### Which is updated more often, Ultimate Unit Converter Pro or QR Scanner?

Ultimate Unit Converter Pro ships an update every 3 days, and QR Scanner every 4 weeks. Most recently, Ultimate Unit Converter Pro was updated on June 10, 2026 and QR Scanner on September 17, 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.*