# PDF Expert Viewer vs PDF Documents Scanner

The clearest difference is in-app purchases: PDF Expert Viewer at none against PDF Documents Scanner's 2. PDF Expert Viewer also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (15 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Documents Scanner sells 2 in-app purchases, starting at $8.99 per 7 days. PDF Expert Viewer asks for nothing beyond the download.

PDF Expert Viewer ships an update weekly, PDF Documents Scanner every 3 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PDF Expert Viewer | PDF Documents Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 64 MB | 21 MB |
| Requires iOS | **15** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | +4 |
| Developer | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) | [HRango](https://appshunter.io/developer/1747277318) |

## 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


### PDF Documents Scanner

[App page](https://appshunter.io/ios/app/pdf-documents-scanner/id6803100158)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $8.99 | per 7 days |
| Document Scanner Premium | $9.99 | per 7 days |


## Frequently asked questions

### Is PDF Expert Viewer free?

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

### Is PDF Documents Scanner free?

PDF Documents Scanner is free to download, with in-app purchases available.

### Do PDF Expert Viewer or PDF Documents Scanner have ads?

Both PDF Expert Viewer and PDF Documents Scanner show ads.

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

PDF Expert Viewer ships an update weekly, and PDF Documents Scanner every 3 weeks. Most recently, PDF Expert Viewer was updated on October 10, 2026 and PDF Documents Scanner on October 25, 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.*