# Smart PDF Compressor vs FileSizeFix

The clearest difference is in-app purchases: Smart PDF Compressor at none against FileSizeFix's 2. Smart PDF Compressor also leads on ads (none vs shown) and update cadence (every 9 days vs every 3 weeks). FileSizeFix's advantage is iOS requirement (16.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. FileSizeFix sells 2 in-app purchases, starting at $1.99 per month. Smart PDF Compressor asks for nothing beyond the download.

Smart PDF Compressor ships an update every 9 days, FileSizeFix every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Smart PDF Compressor | FileSizeFix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/filesizefix-file-compressor/id6787018468/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 50 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Quan Dang](https://appshunter.io/developer/1868401962) | [Deep Platforms GmbH](https://appshunter.io/developer/1835758089) |

## What reviewers say

### Smart PDF Compressor

[App page](https://appshunter.io/ios/app/smart-pdf-compressor-reduce/id6757997785)

**Features:** macOS Compatibility

**In-app purchases:** none


### FileSizeFix

[App page](https://appshunter.io/ios/app/filesizefix-file-compressor/id6787018468)

Easily reduce the size of photos, videos, documents, and audio files directly on your device. Achieve exact file sizes for emails, uploads, or sharing, with options to edit and protect your privacy.

**Highlights:** Compress photos, videos, PDFs, audio, and documents, Set exact target file sizes in KB or MB, Resize images to specific pixel dimensions, Batch processing for multiple files, Offline processing and privacy protection, Edit images, videos, and PDFs before export, Scan paper documents to PDF

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FileSizeFix Pro Monthly | $1.99 | per month |
| FileSizeFix Pro Yearly | $17.99 | per year |


## Frequently asked questions

### Is Smart PDF Compressor free?

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

### Is FileSizeFix free?

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

### Do Smart PDF Compressor or FileSizeFix have ads?

FileSizeFix shows ads; Smart PDF Compressor does not.

### Which is updated more often, Smart PDF Compressor or FileSizeFix?

Smart PDF Compressor ships an update every 9 days, and FileSizeFix every 3 weeks. Most recently, Smart PDF Compressor was updated on October 31, 2026 and FileSizeFix 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.*