# PDF Expert Viewer vs QRFast

The clearest difference is update cadence: PDF Expert Viewer at weekly against QRFast's every 2 weeks. PDF Expert Viewer also leads on iOS requirement (15 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

PDF Expert Viewer ships an update weekly, QRFast every 2 weeks. Both last shipped on October 10, 2026.

## The numbers

| Metric | PDF Expert Viewer | QRFast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 64 MB | 72 MB |
| Requires iOS | **15** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) | [Fuzhou Yuhui Technology Co., Ltd.](https://appshunter.io/developer/6799855081) |

## What reviewers say

### PDF Expert Viewer

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

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

**In-app purchases:** none


### QRFast

[App page](https://appshunter.io/ios/app/qrfast-code-helper/id6799855079)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Expert Viewer free?

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

### Is QRFast free?

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

### Do PDF Expert Viewer or QRFast have ads?

Both PDF Expert Viewer and QRFast show ads.

### Which is updated more often, PDF Expert Viewer or QRFast?

PDF Expert Viewer ships an update weekly, and QRFast every 2 weeks. Most recently, PDF Expert Viewer was updated on October 10, 2026 and QRFast 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.*