# PDF Compressor vs Carnalysys

The clearest difference is in-app purchases: Carnalysys at none against PDF Compressor's 4. Carnalysys also leads on update cadence (every 4 days vs every 6 weeks) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Compressor sells 3 in-app purchases, starting at $4.99 per 7 days. Carnalysys asks for nothing beyond the download.

PDF Compressor ships an update every 6 weeks, Carnalysys every 4 days. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PDF Compressor | Carnalysys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (84 ratings)](https://appshunter.io/ios/app/pdf-compressor-reduce-size/id6476273989/reviews)** | — |
| Number of ratings | **84** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 61 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NextPixel apps](https://appshunter.io/developer/1584487280) | [Aswini Kumar Swain](https://appshunter.io/developer/1895717324) |

## What reviewers say

### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-reduce-size/id6476273989)

Reduce the size of your PDF documents without sacrificing quality. Optimize PDFs for storage, sharing, and faster loading. Effortlessly manage and share your compressed files anywhere.

**Highlights:** Efficient PDF compression, Retain document quality, User-friendly file management, Easy sharing via multiple platforms, Optimize for storage and transfer

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| File Compressor - PDF | $4.99 | per 7 days |
| File Compressor - PDF | $7.99 | per 7 days |
| PDF Compressor - Resize file | $9.99 | per month |


### Carnalysys

[App page](https://appshunter.io/ios/app/carnalysys/id6764287463)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Compressor free?

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

### Is Carnalysys free?

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

### Do PDF Compressor or Carnalysys have ads?

Neither PDF Compressor nor Carnalysys shows ads.

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

PDF Compressor ships an update every 6 weeks, and Carnalysys every 4 days. Most recently, PDF Compressor was updated on October 7, 2026 and Carnalysys on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*