# 3D Model Viewer vs PDF Reader Pro

The clearest difference is rating: 3D Model Viewer at 4.2 against PDF Reader Pro's 3.6. 3D Model Viewer also leads on update cadence (every 3 weeks vs every 4 months) and ratings volume (328 vs 8). PDF Reader Pro's advantage is review sentiment (100% vs 59%) and in-app purchases (none vs 5). On price, ads and device support there is nothing between them.

Both are free to download. 3D Model Viewer sells 5 one-off in-app purchases. PDF Reader Pro asks for nothing beyond the download.

3D Model Viewer holds the better App Store score, 4.2 against 3.6. That said, the two scores are not equally well evidenced: 3D Model Viewer has 328 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 59% of 3D Model Viewer's written reviews are positive against 100% of PDF Reader Pro's, so the app with the better star average is not the one people write more warmly about.

3D Model Viewer ships an update every 3 weeks, PDF Reader Pro every 4 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | 3D Model Viewer | PDF Reader Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (328 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878/reviews)** | [3.6 (8 ratings)](https://appshunter.io/ios/app/pdf-reader-pro-3d-edition/id1598489368/reviews) |
| Number of ratings | **328** | 8 |
| Positive reviews | 59.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 28 MB | 8 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [健 钟](https://appshunter.io/developer/1051588602) | [Nirav Parmar](https://appshunter.io/developer/1596410760) |

## What reviewers say

### 3D Model Viewer

[App page](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878)

View and interact with various 3D model formats in both AR and 3D modes. This intuitive tool supports local and cloud documents, custom backgrounds, and shadow casting. Easily import models via multiple methods and share your creations.

**Highlights:** AR and 3D viewing modes, Supports numerous 3D file formats, Local and cloud document integration, Customizable backgrounds and shadows, Model information display (size, volume, etc.), Multiple import and sharing options

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Model & Screenshot Output | $1.99 | one-time |
| Background from Album | $1.99 | one-time |
| Large File Model | $1.99 | one-time |
| All Features | $5.99 | one-time |

**What reviewers like**

- 👍 Great for viewing 3D models
- 🚀 Fast model loading
- 🔒 Supports many file formats

**What reviewers complain about**

- 🐛 Frequent crashes and errors
- 💸 Intrusive ads and paywalls
- 🤯 Difficult to use interface
- 🚫 Cannot open large files without paying

**Reported bugs**

- App crashes when trying to delete models
- Cannot open .3mf and .glb files
- Texture and shading issues with some models

**Requested features**

- Add support for more 3D file formats
- Improve model rendering quality
- Implement better file management options
- Provide more customization and control over model view


### PDF Reader Pro

[App page](https://appshunter.io/ios/app/pdf-reader-pro-3d-edition/id1598489368)

Experience PDFs in an extraordinary 3D view with this pro PDF reader. It offers a unique 3D book-like reading experience with light and dark modes, and supports both portrait and landscape orientations. Easily share your documents with other applications.

**Highlights:** 3D PDF reading experience, Light and Dark Mode support, Portrait and Landscape orientation, Open Source, Share PDFs to other apps

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D Model Viewer free?

3D Model Viewer is free to download, with in-app purchases available.

### Is PDF Reader Pro free?

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

### Which has better reviews, 3D Model Viewer or PDF Reader Pro?

3D Model Viewer is rated higher. 3D Model Viewer averages 4.2 out of 5 from 328 ratings, while PDF Reader Pro averages 3.6 from 8 ratings.

### Do 3D Model Viewer or PDF Reader Pro have ads?

Both 3D Model Viewer and PDF Reader Pro show ads.

### Which is updated more often, 3D Model Viewer or PDF Reader Pro?

3D Model Viewer ships an update every 3 weeks, and PDF Reader Pro every 4 months. Most recently, 3D Model Viewer was updated on October 14, 2026 and PDF Reader Pro on October 14, 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.*