# PDF Expert Viewer vs Soor

The clearest difference is ads: Soor at none against PDF Expert Viewer's shown. Soor also leads on update cadence (daily vs weekly). On price, in-app purchases, device support and iOS requirement 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, Soor daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PDF Expert Viewer | Soor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Daily** |
| Size | 64 MB | 2 MB |
| Requires iOS | **15** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) | [eWorld](https://appshunter.io/developer/362351587) |

## 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


### Soor

[App page](https://appshunter.io/ios/app/soor/id6815804211)

**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 Soor free?

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

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

PDF Expert Viewer shows ads; Soor does not.

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

PDF Expert Viewer ships an update weekly, and Soor daily. Most recently, PDF Expert Viewer was updated on October 30, 2026 and Soor on October 31, 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.*