# PDF Compressor vs Write on PDF

The clearest difference is in-app purchases: PDF Compressor at none against Write on PDF's 2. PDF Compressor also leads on ratings volume (866 vs 8). Write on PDF's advantage is ads (none vs shown). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. Write on PDF sells 2 in-app purchases, starting at $4.99 per 7 days. PDF Compressor asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for PDF Compressor against 4.5 for Write on PDF. That said, the two scores are not equally well evidenced: PDF Compressor has 866 ratings behind it against 8, so its average is the more settled of the two.

PDF Compressor ships an update every 2 months, Write on PDF every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PDF Compressor | Write on PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (866 ratings)](https://appshunter.io/ios/app/pdf-compressor-compress-pdf/id1637213307/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/write-on-pdf-print-to-pdf/id6755685258/reviews) |
| Number of ratings | **866** | 8 |
| Positive reviews | 26.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 47 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vishalbhai Vaghasiya](https://appshunter.io/developer/1512628511) | [Andrii Kulchytskyi](https://appshunter.io/developer/1759867572) |

## What reviewers say

### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-compress-pdf/id1637213307)

Reduce the size of your PDF documents with this easy-to-use tool. Select your file, choose the desired output quality, and compress your PDFs with a single tap. Save disk space and speed up uploads and downloads.

**Highlights:** Compress PDF files, Reduce PDF file size, Select output PDF quality, Easy-to-use interface, Single-tap compression

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and efficient compression
- 👍 Simple and easy-to-use interface
- 💰 Free to download and use
- ✅ Effective file size reduction
- 📧 Solves email attachment size issues

**What reviewers complain about**

- 📢 Excessive and intrusive advertisements
- 🐛 Frequent app crashes and glitches
- ❌ File compression increases size instead of reducing it
- 🔄 App requires restart after each compression
- ⚠️ Suspicious ad permissions and potential security concerns

**Reported bugs**

- App crashes on second compression attempt
- File size increases instead of decreasing
- App exits unexpectedly after compression
- Compressed file unrecognizable or corrupted
- Keyboard numbers display as blank

**Requested features**

- Reduce or eliminate advertisements
- Add compression quality/control settings
- Batch file compression capability
- Improved preview functionality for multiple documents
- Better file naming conventions for compressed files


### Write on PDF

[App page](https://appshunter.io/ios/app/write-on-pdf-print-to-pdf/id6755685258)

Effortlessly edit, fill, and sign PDF documents. Import PDFs or images, add text, signatures, and stamps, then print or share instantly. Manage your documents offline with a fast and intuitive interface.

**Highlights:** Import PDFs and images, Type, edit, and highlight text, Add signatures and stamps, Fill forms easily, Print and share documents, Offline document management, Create from blank pages or templates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Print to PDF Weekly 3 days free | $4.99 | per 7 days |
| Print to PDF Yearly | $19.99 | per year |


## Frequently asked questions

### Is PDF Compressor free?

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

### Is Write on PDF free?

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

### Which has better reviews, PDF Compressor or Write on PDF?

PDF Compressor is rated higher. PDF Compressor averages 4.6 out of 5 from 866 ratings, while Write on PDF averages 4.5 from 8 ratings.

### Do PDF Compressor or Write on PDF have ads?

PDF Compressor shows ads; Write on PDF does not.

### Which is updated more often, PDF Compressor or Write on PDF?

PDF Compressor ships an update every 2 months, and Write on PDF every 3 months. Most recently, PDF Compressor was updated on November 3, 2026 and Write on PDF on October 30, 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.*