# QR & bar code vs PDF Expert Viewer

The clearest difference is iOS requirement: QR & bar code at 13.0 against PDF Expert Viewer's 15. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

QR & bar code ships an update every 2 weeks, PDF Expert Viewer weekly. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | QR & bar code | PDF Expert Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 36 MB | 64 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) |

## What reviewers say

### QR & bar code

[App page](https://appshunter.io/ios/app/qr-and-bar-code-scan-create/id6742173261)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Expert Viewer

[App page](https://appshunter.io/ios/app/pdf-expert-viewer/id6746780454)

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

**In-app purchases:** none


## Frequently asked questions

### Is QR & bar code free?

QR & bar code is free to download, with no in-app purchases.

### Is PDF Expert Viewer free?

PDF Expert Viewer is free to download, with no in-app purchases.

### Do QR & bar code or PDF Expert Viewer have ads?

Both QR & bar code and PDF Expert Viewer show ads.

### Which is updated more often, QR & bar code or PDF Expert Viewer?

QR & bar code ships an update every 2 weeks, and PDF Expert Viewer weekly. Most recently, QR & bar code was updated on October 1, 2026 and PDF Expert Viewer on October 10, 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.*