# proLingo+ vs QR Preview

The clearest difference is price: proLingo+ at Free against QR Preview's $0.99. QR Preview's advantage is iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

proLingo+ is free to download; QR Preview costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | proLingo+ | QR Preview |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 22 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [岩 王](https://appshunter.io/developer/1886021410) | [Luan Cu Xuan](https://appshunter.io/developer/1892678405) |

## What reviewers say

### proLingo+

[App page](https://appshunter.io/ios/app/prolingo-plus/id6761319220)

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

**In-app purchases:** none


### QR Preview

[App page](https://appshunter.io/ios/app/qr-preview/id6784224698)

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

**In-app purchases:** none


## Frequently asked questions

### Is proLingo+ free?

proLingo+ is free to download, with no in-app purchases.

### Is QR Preview free?

QR Preview costs $0.99, with no in-app purchases.

### Do proLingo+ or QR Preview have ads?

Neither proLingo+ nor QR Preview shows 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.*