# PDF Compressor vs TIFF Viewer

The clearest difference is review sentiment: TIFF Viewer at 100% against PDF Compressor's 26%. TIFF Viewer also leads on update cadence (every 10 days vs every 2 months). PDF Compressor's advantage is rating (4.6 vs 4.0) and in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

Both are free to download. TIFF Viewer sells 1 one-off in-app purchase. PDF Compressor asks for nothing beyond the download.

PDF Compressor holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: PDF Compressor has 813 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 26% of PDF Compressor's written reviews are positive against 100% of TIFF Viewer's, so the app with the better star average is not the one people write more warmly about.

PDF Compressor ships an update every 2 months, TIFF Viewer every 10 days. The most recent releases landed on October 17, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | PDF Compressor | TIFF Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (813 ratings)](https://appshunter.io/ios/app/pdf-compressor-compress-pdf/id1637213307/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/tiff-viewer/id6743369162/reviews) |
| Number of ratings | **813** | 1 |
| Positive reviews | 26.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vishalbhai Vaghasiya](https://appshunter.io/developer/1512628511) | [Ismail Carlik](https://appshunter.io/developer/1748163338) |

## 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


### TIFF Viewer

[App page](https://appshunter.io/ios/app/tiff-viewer/id6743369162)

Easily open and view multi-page TIFF images and documents. Convert your TIFF files to PDF format with a single click for convenient sharing and archiving. Experience high-fidelity rendering and smooth navigation through your files.

**Highlights:** Multi-page TIFF support, One-click PDF conversion, High-fidelity image rendering, Smooth zoom and pan, Simple user interface, Fast and stable performance

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


## Frequently asked questions

### Is PDF Compressor free?

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

### Is TIFF Viewer free?

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

### Which has better reviews, PDF Compressor or TIFF Viewer?

PDF Compressor is rated higher. PDF Compressor averages 4.6 out of 5 from 813 ratings, while TIFF Viewer averages 4.0 from 1 ratings.

### Do PDF Compressor or TIFF Viewer have ads?

Both PDF Compressor and TIFF Viewer show ads.

### Which is updated more often, PDF Compressor or TIFF Viewer?

PDF Compressor ships an update every 2 months, and TIFF Viewer every 10 days. Most recently, PDF Compressor was updated on October 17, 2026 and TIFF Viewer on September 25, 2026.

---

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