# 3D Model Viewer vs Sketch Viewer UP

The clearest difference is review sentiment: 3D Model Viewer at 59% against Sketch Viewer UP's 0%. 3D Model Viewer also leads on rating (4.2 vs 1.6) and ratings volume (328 vs 10). Sketch Viewer UP's advantage is ads (none vs shown) and update cadence (every 8 days vs every 3 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. 3D Model Viewer sells 5 one-off in-app purchases and Sketch Viewer UP sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

3D Model Viewer holds the better App Store score, 4.2 against 1.6. That said, the two scores are not equally well evidenced: 3D Model Viewer has 328 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 59% of 3D Model Viewer's written reviews are positive against 0% of Sketch Viewer UP's.

3D Model Viewer ships an update every 3 weeks, Sketch Viewer UP every 8 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | 3D Model Viewer | Sketch Viewer UP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (328 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878/reviews)** | [1.6 (10 ratings)](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214/reviews) |
| Number of ratings | **328** | 10 |
| Positive reviews | **59.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 40 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [健 钟](https://appshunter.io/developer/1051588602) | [骁宇 陈](https://appshunter.io/developer/1836429187) |

## 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


### Sketch Viewer UP

[App page](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214)

This application allows users to import and view 3D models from various professional design software. It supports a wide range of file formats, making it convenient for designers, engineers, and students to access and analyze 3D drawings on their mobile devices.

**Highlights:** Import and view 3D drawings, Supports multiple professional 3D file formats, Collection of standard industry libraries, Mobile 3D viewing software, Professional CAD drawing and modeling

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一季度会员 | $9.99 | one-time |
| 一年会员 | $24.99 | one-time |
| 永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is Sketch Viewer UP free?

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

### Which has better reviews, 3D Model Viewer or Sketch Viewer UP?

3D Model Viewer is rated higher. 3D Model Viewer averages 4.2 out of 5 from 328 ratings, while Sketch Viewer UP averages 1.6 from 10 ratings.

### Do 3D Model Viewer or Sketch Viewer UP have ads?

3D Model Viewer shows ads; Sketch Viewer UP does not.

### Which is updated more often, 3D Model Viewer or Sketch Viewer UP?

3D Model Viewer ships an update every 3 weeks, and Sketch Viewer UP every 8 days. Most recently, 3D Model Viewer was updated on October 24, 2026 and Sketch Viewer UP on October 24, 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.*