# PDF Expert Viewer vs Vox Translate

PDF Expert Viewer and Vox Translate are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, Vox Translate every 11 days. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PDF Expert Viewer | Vox Translate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 11 days |
| Size | 64 MB | 135 MB |
| Requires iOS | **15** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu Doudou Oasis Network Technology Co.,Ltd](https://appshunter.io/developer/1776078126) | [Fuzhou Qingyue Network Technology Co., Ltd.](https://appshunter.io/developer/6771612144) |

## 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


### Vox Translate

[App page](https://appshunter.io/ios/app/vox-translate-docs/id6808060141)

**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 Vox Translate free?

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

### Do PDF Expert Viewer or Vox Translate have ads?

Both PDF Expert Viewer and Vox Translate show ads.

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

PDF Expert Viewer ships an update weekly, and Vox Translate every 11 days. Most recently, PDF Expert Viewer was updated on October 10, 2026 and Vox Translate on October 18, 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.*