# PDF Compressor－Compress PDF vs ShareDNI

The clearest difference is ads: ShareDNI at none against PDF Compressor－Compress PDF's shown. ShareDNI also leads on update cadence (fortnightly vs every 2 months). PDF Compressor－Compress PDF's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On price and in-app purchases there is nothing between them.

Both are free to download. PDF Compressor－Compress PDF sells 4 in-app purchases, starting at $5.99 per 7 days and ShareDNI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PDF Compressor－Compress PDF ships an update every 2 months, ShareDNI fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PDF Compressor－Compress PDF | ShareDNI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (153 ratings)](https://appshunter.io/ios/app/pdf-compressorcompress-pdf/id6748140542/reviews)** | — |
| Number of ratings | **153** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 22 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [EclixTech UK LTD](https://appshunter.io/developer/1824450302) | [Taps and Swipes](https://appshunter.io/developer/300548459) |

## What reviewers say

### PDF Compressor－Compress PDF

[App page](https://appshunter.io/ios/app/pdf-compressorcompress-pdf/id6748140542)

Easily reduce the size of your PDF files without sacrificing quality. This tool helps you shrink PDFs for faster sharing, emailing, or uploading, saving valuable storage space. It's perfect for managing large documents and scanned files efficiently.

**Highlights:** Compress PDF files without losing clarity, Smart compressor for scanned or large documents, Reduce PDF size for easy upload and sharing, Free compressor with high quality output, Preserve text and image quality, Choose compression level

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $5.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Yearly Subscription | $39.99 | per year |


### ShareDNI

[App page](https://appshunter.io/ios/app/sharedni-safe-watermarked-id/id6760951453)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShareDNI PRO Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is PDF Compressor－Compress PDF free?

PDF Compressor－Compress PDF is free to download, with in-app purchases available.

### Is ShareDNI free?

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

### Do PDF Compressor－Compress PDF or ShareDNI have ads?

PDF Compressor－Compress PDF shows ads; ShareDNI does not.

### Which is updated more often, PDF Compressor－Compress PDF or ShareDNI?

PDF Compressor－Compress PDF ships an update every 2 months, and ShareDNI fortnightly. Most recently, PDF Compressor－Compress PDF was updated on October 28, 2026 and ShareDNI 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.*