# DocOne Express vs PDF Compressor

The clearest difference is price: PDF Compressor at Free against DocOne Express's $3.99. PDF Compressor also leads on update cadence (every 6 days vs every 3 weeks). DocOne Express's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

PDF Compressor is free to download; DocOne Express costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DocOne Express ships an update every 3 weeks, PDF Compressor every 6 days. The most recent releases landed on October 18, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | DocOne Express | PDF Compressor |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 7 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ANTONIO PADALINO](https://appshunter.io/developer/6798513902) | [Jeny Goentoro](https://appshunter.io/developer/6774213231) |

## What reviewers say

### DocOne Express

[App page](https://appshunter.io/ios/app/docone-express/id6800257286)

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor/id6814202940)

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

**In-app purchases:** none


## Frequently asked questions

### Is DocOne Express free?

DocOne Express costs $3.99, with no in-app purchases.

### Is PDF Compressor free?

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

### Do DocOne Express or PDF Compressor have ads?

PDF Compressor shows ads; DocOne Express does not.

### Which is updated more often, DocOne Express or PDF Compressor?

DocOne Express ships an update every 3 weeks, and PDF Compressor every 6 days. Most recently, DocOne Express was updated on October 18, 2026 and PDF Compressor on October 26, 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.*