# PDFOptim vs PDF Compress

The clearest difference is review sentiment: PDFOptim at 76% against PDF Compress's 0%. PDFOptim also leads on rating (4.7 vs 2.0) and ratings volume (292 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. PDFOptim sells 3 in-app purchases, starting at $0.99 per month and PDF Compress sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDFOptim holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: PDFOptim has 292 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 76% of PDFOptim's written reviews are positive against 0% of PDF Compress's.

PDFOptim ships an update every 5 months, PDF Compress every 3 months. The most recent releases landed on September 21, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | PDFOptim | PDF Compress |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (292 ratings)](https://appshunter.io/ios/app/pdfoptim/id903356489/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/pdf-compress-size-compressor/id6642679859/reviews) |
| Number of ratings | **292** | 1 |
| Positive reviews | **75.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 6 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RootRise Technologies Pvt. Ltd.](https://appshunter.io/developer/594431033) | [Mohamed Oufqir](https://appshunter.io/developer/1750312649) |

## What reviewers say

### PDFOptim

[App page](https://appshunter.io/ios/app/pdfoptim/id903356489)

Easily compress and optimize PDF files on your iPhone and iPad. Reduce the size of large documents, saving storage space and transmission time. Offers both automatic and manual compression modes with advanced settings for image and vector graphics.

**Highlights:** Compress PDF documents, Optimize PDF files, Automatic compression mode, Manual compression mode, Adjust image resolution and quality, Optimize vector graphics, Support for password-protected PDFs

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium : Monthly Access | $0.99 | per month |
| Premium : Yearly Access | $2.99 | per year |
| Premium : Lifetime Access | $4.99 | one-time |

**What reviewers like**

- 👍 Excellent compression quality
- 🚀 Efficient and fast performance
- 👍 Simple and easy to use
- 💰 Good value for money (one-time purchase)
- 👍 No annoying subscriptions

**What reviewers complain about**

- 🐛 App not launching/freezing
- 🐛 Doesn't work for certain file types (e.g., GoodNotes)
- 🐛 Poor image quality/pixelation
- 🐛 Compression not effective on all PDFs
- 🐛 Confusing or illogical interface

**Reported bugs**

- App not launching on iOS 18.0.1
- App freezes during launch
- App won't take purchases
- Cannot optimize certain PDFs
- Compression not effective on marked-up PDFs

**Requested features**

- Support for iOS shortcuts
- macOS version integration/cross-platform compatibility
- Improved handling of specific file types like GoodNotes
- Better optimization for handwritten notes within PDFs
- Cloud storage for compressed documents (iCloud)


### PDF Compress

[App page](https://appshunter.io/ios/app/pdf-compress-size-compressor/id6642679859)

This tool allows you to significantly reduce the size of PDF files, making them easier to share. It offers multiple compression levels and a user-friendly interface for quick and efficient file management. You can also rename and preview files before sharing.

**Highlights:** Compress PDF files to desired size, Multiple compression levels, User-friendly design, Fast and easy-to-use interface, Achieve over 90% compression, Rename PDF files, Preview PDF files

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $1.99 | per 7 days |
| Month | $4.99 | per month |
| Year | $14.99 | per year |


## Frequently asked questions

### Is PDFOptim free?

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

### Is PDF Compress free?

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

### Which has better reviews, PDFOptim or PDF Compress?

PDFOptim is rated higher. PDFOptim averages 4.7 out of 5 from 292 ratings, while PDF Compress averages 2.0 from 1 ratings.

### Do PDFOptim or PDF Compress have ads?

Neither PDFOptim nor PDF Compress shows ads.

### Which is updated more often, PDFOptim or PDF Compress?

PDFOptim ships an update every 5 months, and PDF Compress every 3 months. Most recently, PDFOptim was updated on September 21, 2026 and PDF Compress on June 4, 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.*