# Unit Converter vs QR Reader：QR  Code

The clearest difference is price: Unit Converter at Free against QR Reader：QR  Code's $1.99. QR Reader：QR  Code's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

Unit Converter is free to download; QR Reader：QR  Code costs $1.99 up front. Unit Converter sells 2 in-app purchases, starting at $4.99 per month. QR Reader：QR  Code asks for nothing beyond the download.

Unit Converter ships an update every 13 months, QR Reader：QR  Code every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Unit Converter | QR Reader：QR  Code |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/unit-converter/id1377049882/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 13 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 35 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [宝锋 吴](https://appshunter.io/developer/1639886745) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter/id1377049882)

This app offers a wide range of unit conversions for various measurements, from temperature to length. It features a user-friendly interface, customizable themes, and smart features that remember your frequent conversions. It also links to external apps for specialized tasks.

**Highlights:** Broad conversion spectrum, Personalizable themes, User-friendly interface, Smart features for frequent conversions, Links to specialized external apps

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unit Converter | $4.99 | per month |
| Unit Converter | $39.99 | per year |


### QR Reader：QR  Code

[App page](https://appshunter.io/ios/app/qr-readerqr-code/id6447519739)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is QR Reader：QR  Code free?

QR Reader：QR  Code costs $1.99, with no in-app purchases.

### Do Unit Converter or QR Reader：QR  Code have ads?

Unit Converter shows ads; QR Reader：QR  Code does not.

### Which is updated more often, Unit Converter or QR Reader：QR  Code?

Unit Converter ships an update every 13 months, and QR Reader：QR  Code every 4 months. Most recently, Unit Converter was updated on November 2, 2026 and QR Reader：QR  Code on November 3, 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.*