# PDF Expert Viewer vs PDF Hub

The clearest difference is iOS requirement: PDF Expert Viewer at 15 against PDF Hub's 17. 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.

PDF Expert Viewer ships an update weekly, PDF Hub every 6 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PDF Expert Viewer | PDF Hub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-hub/id6754962296/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | — | Ad-supported |
| Size | 64 MB | 87 MB |
| Requires iOS | **15** | 17 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) | [通县 王](https://appshunter.io/developer/1762035495) |

## 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 Hub

[App page](https://appshunter.io/ios/app/pdf-hub/id6754962296)

This app offers a comprehensive suite of tools to manage PDF documents on your iPhone and iPad. Easily scan, compress, split, merge, add watermarks, and convert images to PDF, all processed locally on your device for enhanced privacy.

**Highlights:** Scan documents to PDF, Compress PDF file size, Split and merge PDF files, Add custom watermarks, Convert images to PDF, Offline processing

**Features:** macOS Compatibility

**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 PDF Hub free?

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

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

Both PDF Expert Viewer and PDF Hub show ads.

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

PDF Expert Viewer ships an update weekly, and PDF Hub every 6 days. Most recently, PDF Expert Viewer was updated on October 28, 2026 and PDF Hub 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.*