# PDF Compression vs p7m Reader

The clearest difference is ads: p7m Reader at none against PDF Compression's shown. p7m Reader also leads on iOS requirement (15.0 vs 18.5). PDF Compression's advantage is update cadence (every 4 days vs every 2 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Compression sells 1 one-off in-app purchase and p7m Reader sells 2 in-app purchases, starting at $17.99 per year. Whichever you choose, the download price is not the number that matters.

PDF Compression ships an update every 4 days, p7m Reader every 2 weeks. The most recent releases landed on July 3, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | PDF Compression | p7m Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pdf-compression/id6752516285/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 35 MB |
| Requires iOS | 18.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Gonzalez de la aleja german](https://appshunter.io/developer/1839645711) | [Prabin Chapagain](https://appshunter.io/developer/6794859189) |

## What reviewers say

### PDF Compression

[App page](https://appshunter.io/ios/app/pdf-compression/id6752516285)

Easily reduce the size of your PDF files without sacrificing quality. This tool is perfect for students and professionals needing to optimize documents for storage, email, or sharing. Compress multiple files quickly and efficiently.

**Highlights:** Compress PDFs for free, Reduce file size to specific megabytes, Optimize documents for email and sharing, Compress multiple PDFs at once, Maintain document quality during compression, Convert PDFs to ZIP format

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### p7m Reader

[App page](https://appshunter.io/ios/app/p7m-reader/id6794859187)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly access | $17.99 | per year |
| Lifetime access | $34.99 | one-time |


## Frequently asked questions

### Is PDF Compression free?

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

### Is p7m Reader free?

p7m Reader is free to download, with in-app purchases available.

### Do PDF Compression or p7m Reader have ads?

PDF Compression shows ads; p7m Reader does not.

### Which is updated more often, PDF Compression or p7m Reader?

PDF Compression ships an update every 4 days, and p7m Reader every 2 weeks. Most recently, PDF Compression was updated on July 3, 2026 and p7m Reader on September 15, 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.*