# IO ∙ Converter & Calculator vs QR Code

The clearest difference is review sentiment: QR Code at 100% against IO ∙ Converter & Calculator's 33%. QR Code also leads on price (Free vs $0.99) and rating (5.0 vs 4.0). IO ∙ Converter & Calculator's advantage is in-app purchases (none vs 2) and device support (5 vs 1). On ads and iOS requirement there is nothing between them.

QR Code is free to download; IO ∙ Converter & Calculator costs $0.99 up front. QR Code sells 2 in-app purchases, starting at $19.99 per 7 days. IO ∙ Converter & Calculator asks for nothing beyond the download.

QR Code holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 33% of IO ∙ Converter & Calculator's written reviews are positive against 100% of QR Code's.

IO ∙ Converter & Calculator ships an update every 5 months, QR Code weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | IO ∙ Converter & Calculator | QR Code |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/qr-code-reader-pro/id6741415586/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 38 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alex Codrington](https://appshunter.io/developer/358228521) | [建 郭](https://appshunter.io/developer/1793657156) |

## What reviewers say

### IO ∙ Converter & Calculator

[App page](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713)

This utility app offers a comprehensive solution for unit and currency conversions, featuring live currency updates and a built-in calculator. It supports a wide range of units across multiple categories and is available on various Apple platforms.

**Highlights:** 13 conversion categories, Over 120 units supported, Live currency exchange rates, Integrated calculator, Cross-platform availability (Apple devices)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### QR Code

[App page](https://appshunter.io/ios/app/qr-code-reader-pro/id6741415586)

Easily scan QR codes and barcodes to access information. You can also create and share your own codes with others. Upgrade for unlimited scans and an ad-free experience.

**Highlights:** Scan QR codes and barcodes, Create custom QR codes, Share codes with friends, Unlimited scans (PRO), Product information access (PRO), Ad-free experience (PRO)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| week | $19.99 | per 7 days |
| month | $29.99 | per month |


## Frequently asked questions

### Is IO ∙ Converter & Calculator free?

IO ∙ Converter & Calculator costs $0.99, with no in-app purchases.

### Is QR Code free?

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

### Which has better reviews, IO ∙ Converter & Calculator or QR Code?

QR Code is rated higher. IO ∙ Converter & Calculator averages 4.0 out of 5 from 1 ratings, while QR Code averages 5.0 from 4 ratings.

### Do IO ∙ Converter & Calculator or QR Code have ads?

Neither IO ∙ Converter & Calculator nor QR Code shows ads.

### Which is updated more often, IO ∙ Converter & Calculator or QR Code?

IO ∙ Converter & Calculator ships an update every 5 months, and QR Code weekly. Most recently, IO ∙ Converter & Calculator was updated on October 30, 2026 and QR Code on October 30, 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.*