# 3D Model Viewer vs STL Viewer · Model File Reader

The clearest difference is rating: STL Viewer · Model File Reader at 5.0 against 3D Model Viewer's 4.4. 3D Model Viewer's advantage is ads (none vs shown) and ratings volume (364 vs 2). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 3D Model Viewer sells 1 one-off in-app purchase and STL Viewer · Model File Reader sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

STL Viewer · Model File Reader holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: 3D Model Viewer has 364 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 20% of 3D Model Viewer's written reviews are positive against 0% of STL Viewer · Model File Reader's, so the app with the better star average is not the one people write more warmly about.

3D Model Viewer ships an update weekly, STL Viewer · Model File Reader every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 3D Model Viewer | STL Viewer · Model File Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (364 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stl-viewer-model-file-reader/id6760254634/reviews)** |
| Number of ratings | **364** | 2 |
| Positive reviews | **20.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 31 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod, Vision Pro | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.](https://appshunter.io/developer/867175889) | [OMER FARUK KIZILTUG](https://appshunter.io/developer/1870337585) |

## 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


### STL Viewer · Model File Reader

[App page](https://appshunter.io/ios/app/stl-viewer-model-file-reader/id6760254634)

Quickly view and interact with 3D model files. Rotate, zoom, and project models into your environment using augmented reality. Offers customization options and multi-model support.

**Highlights:** Fast STL file viewing, 3D model rotation and zoom, Augmented Reality (AR) projection, Customizable model and background colors, Multi-model support, Grid viewer and lighting options

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $19.99 | per year |


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is STL Viewer · Model File Reader free?

STL Viewer · Model File Reader is free to download, with in-app purchases available.

### Which has better reviews, 3D Model Viewer or STL Viewer · Model File Reader?

STL Viewer · Model File Reader is rated higher. 3D Model Viewer averages 4.4 out of 5 from 364 ratings, while STL Viewer · Model File Reader averages 5.0 from 2 ratings.

### Do 3D Model Viewer or STL Viewer · Model File Reader have ads?

STL Viewer · Model File Reader shows ads; 3D Model Viewer does not.

### Which is updated more often, 3D Model Viewer or STL Viewer · Model File Reader?

3D Model Viewer ships an update weekly, and STL Viewer · Model File Reader every 2 weeks. Most recently, 3D Model Viewer was updated on November 7, 2026 and STL Viewer · Model File Reader on October 31, 2026.

---

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