# PDFOptim vs Batch PDF Compressor SquashPDF

The clearest difference is rating: PDFOptim at 4.7 against Batch PDF Compressor SquashPDF's 3.5. PDFOptim also leads on ratings volume (292 vs 2) and device support (3 vs 1). Batch PDF Compressor SquashPDF's advantage is update cadence (every 4 weeks vs every 5 months). On price, review sentiment, 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 Batch PDF Compressor SquashPDF sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

PDFOptim holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: PDFOptim has 292 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 76% and 75% positive.

PDFOptim ships an update every 5 months, Batch PDF Compressor SquashPDF every 4 weeks. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PDFOptim | Batch PDF Compressor SquashPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (292 ratings)](https://appshunter.io/ios/app/pdfoptim/id903356489/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/batch-pdf-compressor-squashpdf/id6747497350/reviews) |
| Number of ratings | **292** | 2 |
| Positive reviews | **75.6% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 8 MB | 27 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RootRise Technologies Pvt. Ltd.](https://appshunter.io/developer/594431033) | [Yash Mandhyan](https://appshunter.io/developer/1856960217) |

## 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)


### Batch PDF Compressor SquashPDF

[App page](https://appshunter.io/ios/app/batch-pdf-compressor-squashpdf/id6747497350)

This tool efficiently reduces PDF file sizes without compromising quality. It allows users to select a target file size and offers batch compression for multiple documents. A preview feature helps verify quality before saving.

**Highlights:** Compress single or multiple PDFs, Select target file size, Batch compression, Side-by-side quality preview, Local history of compressions

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Weekly Subscription | $4.99 | per 7 days |
| Yearly Subscription | $14.99 | per year |


## Frequently asked questions

### Is PDFOptim free?

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

### Is Batch PDF Compressor SquashPDF free?

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

### Which has better reviews, PDFOptim or Batch PDF Compressor SquashPDF?

PDFOptim is rated higher. PDFOptim averages 4.7 out of 5 from 292 ratings, while Batch PDF Compressor SquashPDF averages 3.5 from 2 ratings.

### Do PDFOptim or Batch PDF Compressor SquashPDF have ads?

Neither PDFOptim nor Batch PDF Compressor SquashPDF shows ads.

### Which is updated more often, PDFOptim or Batch PDF Compressor SquashPDF?

PDFOptim ships an update every 5 months, and Batch PDF Compressor SquashPDF every 4 weeks. Most recently, PDFOptim was updated on September 21, 2026 and Batch PDF Compressor SquashPDF on September 22, 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.*