# 3D Model Viewer vs Numerus

The clearest difference is in-app purchases: Numerus at none against 3D Model Viewer's 1. 3D Model Viewer's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 3D Model Viewer sells 1 one-off in-app purchase. Numerus asks for nothing beyond the download.

## The numbers

| Metric | 3D Model Viewer | Numerus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (362 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223/reviews)** | — |
| Number of ratings | **362** | — |
| Positive reviews | 20.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 34 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.](https://appshunter.io/developer/867175889) | [Viento Digital](https://appshunter.io/developer/768009504) |

## What reviewers say

### 3D Model Viewer

[App page](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223)

Explore and interact with 3D models on your mobile device. Simulate the 3D printing process to identify potential issues before committing to a print. Visualize your models in augmented reality, adjusting scale and rotation within your real-world environment.

**Highlights:** View 3D models in real-time, Rotate, zoom, and paint models, Simulate 3D printing process, View models in AR mode, Adjust scale and rotation in AR, Supports multiple 3D file formats

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Model Viewer Premium | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 👍 Nice app design
- 👍 Simple and well-designed
- 👍 Quick viewing of models
- 👍 Low app size

**What reviewers complain about**

- 👎 Only one free model import
- 👎 Paywall for more models
- 👎 Models shown at incorrect scale
- 👎 App crashes frequently
- 👎 Limited free version

**Reported bugs**

- App crashes immediately after upload
- App crashes when importing PLY files
- App crashes after payment
- App crashes when importing large files
- App crashes on iPad Pro

**Requested features**

- Allow changing background color
- Allow changing lighting positions
- Add axis lock object rotation
- Add way to rotate side to side (turntable)
- Option to slow down rotation/movements


### Numerus

[App page](https://appshunter.io/ios/app/numerus-calculation-notebook/id6798961056)

**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 Numerus free?

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

### Do 3D Model Viewer or Numerus have ads?

Neither 3D Model Viewer nor Numerus shows ads.

---

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