# FormatFox vs PDF Compressor

The clearest difference is in-app purchases: PDF Compressor at none against FormatFox's 1. PDF Compressor also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. FormatFox sells 1 one-off in-app purchase. PDF Compressor asks for nothing beyond the download.

FormatFox ships an update every 3 weeks, PDF Compressor every 2 days. The most recent releases landed on September 25, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | FormatFox | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 5 MB | 5 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Levin David Schwab](https://appshunter.io/developer/1896432297) | [TAREQ ALHUSAINI](https://appshunter.io/developer/1259393688) |

## What reviewers say

### FormatFox

[App page](https://appshunter.io/ios/app/formatfox-file-converter/id6780056392)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FormatFox Pro | $4.99 | one-time |


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-reduce-pdf/id6809077494)

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

**In-app purchases:** none


## Frequently asked questions

### Is FormatFox free?

FormatFox is free to download, with in-app purchases available.

### Is PDF Compressor free?

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

### Do FormatFox or PDF Compressor have ads?

Both FormatFox and PDF Compressor show ads.

### Which is updated more often, FormatFox or PDF Compressor?

FormatFox ships an update every 3 weeks, and PDF Compressor every 2 days. Most recently, FormatFox was updated on September 25, 2026 and PDF Compressor on September 13, 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.*