# PDFOptim vs PDF Squeezer

The clearest difference is update cadence: PDF Squeezer at monthly against PDFOptim's every 5 months. PDFOptim's advantage is ratings volume (292 vs 22) and review sentiment (76% vs 64%). On price, rating, 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 Squeezer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for PDFOptim against 4.8 for PDF Squeezer. That said, the two scores are not equally well evidenced: PDFOptim has 292 ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 76% of PDFOptim's written reviews are positive against 64% of PDF Squeezer's.

PDFOptim ships an update every 5 months, PDF Squeezer monthly. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | PDFOptim | PDF Squeezer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (292 ratings)](https://appshunter.io/ios/app/pdfoptim/id903356489/reviews) | **[4.8 (22 ratings)](https://appshunter.io/ios/app/pdf-squeezer/id6478766883/reviews)** |
| Number of ratings | **292** | 22 |
| Positive reviews | **75.6% of reviews** | 63.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 29 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RootRise Technologies Pvt. Ltd.](https://appshunter.io/developer/594431033) | [Daniel Witt](https://appshunter.io/developer/1438848391) |

## 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 Squeezer

[App page](https://appshunter.io/ios/app/pdf-squeezer/id6478766883)

Reduce PDF file sizes on your iPhone or iPad with customizable compression settings. Preview changes before saving and process files securely offline. Automate tasks with iOS Shortcuts integration and compress multiple files at once.

**Highlights:** Customizable compression settings, Preview compressed PDFs, Offline, on-device processing, iOS Shortcuts integration, Batch compression

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $9.99 | one-time |


## Frequently asked questions

### Is PDFOptim free?

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

### Is PDF Squeezer free?

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

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

PDF Squeezer is rated higher. PDFOptim averages 4.7 out of 5 from 292 ratings, while PDF Squeezer averages 4.8 from 22 ratings.

### Do PDFOptim or PDF Squeezer have ads?

Neither PDFOptim nor PDF Squeezer shows ads.

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

PDFOptim ships an update every 5 months, and PDF Squeezer monthly. Most recently, PDFOptim was updated on September 21, 2026 and PDF Squeezer on September 20, 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.*