# Carat Weight Calculator vs QR Scanner

The clearest difference is in-app purchases: Carat Weight Calculator at none against QR Scanner's 3. Carat Weight Calculator also leads on update cadence (every 4 days vs every 3 weeks) and iOS requirement (14.5 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. QR Scanner sells 3 in-app purchases, starting at $6.99 per month. Carat Weight Calculator asks for nothing beyond the download.

Carat Weight Calculator ships an update every 4 days, QR Scanner every 3 weeks. The most recent releases landed on August 24, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Carat Weight Calculator | QR Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 6 MB | 78 MB |
| Requires iOS | **14.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) | [HRango](https://appshunter.io/developer/1747277318) |

## What reviewers say

### Carat Weight Calculator

[App page](https://appshunter.io/ios/app/carat-weight-calculator/id1599902817)

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

**In-app purchases:** none


### QR Scanner

[App page](https://appshunter.io/ios/app/qr-scanner-code-reader/id6752884905)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Weekly | $9.99 | per 7 days |
| Yearly | $34.99 | per year |


## Frequently asked questions

### Is Carat Weight Calculator free?

Carat Weight Calculator 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 Carat Weight Calculator or QR Scanner have ads?

Neither Carat Weight Calculator nor QR Scanner shows ads.

### Which is updated more often, Carat Weight Calculator or QR Scanner?

Carat Weight Calculator ships an update every 4 days, and QR Scanner every 3 weeks. Most recently, Carat Weight Calculator was updated on August 24, 2026 and QR Scanner on August 22, 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.*