# Model Viewer | CAD Viewer vs Kuu3D

The clearest difference is update cadence: Kuu3D at weekly against Model Viewer | CAD Viewer's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Model Viewer | CAD Viewer sells 2 in-app purchases, starting at $1.99 per month and Kuu3D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Model Viewer | CAD Viewer ships an update every 2 weeks, Kuu3D weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Model Viewer | CAD Viewer | Kuu3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/model-viewer-cad-viewer/id6781777518/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 12 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Astonish Innovations](https://appshunter.io/developer/487194923) | [Hirofumi Tanjo](https://appshunter.io/developer/6823586314) |

## What reviewers say

### Model Viewer | CAD Viewer

[App page](https://appshunter.io/ios/app/model-viewer-cad-viewer/id6781777518)

View and inspect 3D model files with ease. Import various formats, manipulate the view with intuitive controls, and access basic model information on a clear workspace.

**Highlights:** 3D model inspection, Import multiple file formats, Rotate, pan, and zoom controls, Toggle grid workspace, View basic model details

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Model Viewer Pro Monthly | $1.99 | per month |
| Model Viewer Pro Yearly | $19.99 | per year |


### Kuu3D

[App page](https://appshunter.io/ios/app/kuu3d/id6823961774)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $4.99 | one-time |


## Frequently asked questions

### Is Model Viewer | CAD Viewer free?

Model Viewer | CAD Viewer is free to download, with in-app purchases available.

### Is Kuu3D free?

Kuu3D is free to download, with in-app purchases available.

### Do Model Viewer | CAD Viewer or Kuu3D have ads?

Neither Model Viewer | CAD Viewer nor Kuu3D shows ads.

### Which is updated more often, Model Viewer | CAD Viewer or Kuu3D?

Model Viewer | CAD Viewer ships an update every 2 weeks, and Kuu3D weekly. Most recently, Model Viewer | CAD Viewer was updated on October 31, 2026 and Kuu3D on October 31, 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.*