# 3D Model Viewer vs CPD Mastery

The clearest difference is ads: CPD Mastery at none against 3D Model Viewer's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 3D Model Viewer sells 5 one-off in-app purchases and CPD Mastery sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

3D Model Viewer ships an update every 3 weeks, CPD Mastery monthly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 3D Model Viewer | CPD Mastery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (328 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878/reviews)** | — |
| Number of ratings | **328** | — |
| Positive reviews | 59.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 40 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [健 钟](https://appshunter.io/developer/1051588602) | [Craig Bartlett](https://appshunter.io/developer/1791147194) |

## 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


### CPD Mastery

[App page](https://appshunter.io/ios/app/cpd-mastery/id6740707032)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPD Mastery Premium | $9.99 | per month |


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is CPD Mastery free?

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

### Do 3D Model Viewer or CPD Mastery have ads?

3D Model Viewer shows ads; CPD Mastery does not.

### Which is updated more often, 3D Model Viewer or CPD Mastery?

3D Model Viewer ships an update every 3 weeks, and CPD Mastery monthly. Most recently, 3D Model Viewer was updated on October 14, 2026 and CPD Mastery on October 5, 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.*