# 3D Model Viewer vs STL Viewer

The clearest difference is review sentiment: STL Viewer at 100% against 3D Model Viewer's 20%. STL Viewer also leads on rating (5.0 vs 4.4). 3D Model Viewer's advantage is price (Free vs $0.99) and ratings volume (363 vs 1). On ads and in-app purchases there is nothing between them.

3D Model Viewer is free to download; STL Viewer costs $0.99 up front. 3D Model Viewer sells 1 one-off in-app purchase and STL Viewer sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

STL Viewer 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 363 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 20% of 3D Model Viewer's written reviews are positive against 100% of STL Viewer's.

3D Model Viewer ships an update weekly, STL Viewer every 4 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 3D Model Viewer | STL Viewer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.4 (363 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487/reviews)** |
| Number of ratings | **363** | 1 |
| Positive reviews | 20.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 17 MB | 5 MB |
| Requires iOS | **15.6** | 17.0 |
| 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) | [Felipe Marques de Barros](https://appshunter.io/developer/1459294806) |

## 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

[App page](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487)

View, explore, and edit 3D models on your iPhone or iPad. Basic viewing is included with purchase, with optional upgrades for advanced creation, editing, and reporting features. Models are processed locally for privacy.

**Highlights:** Open and view STL files, Rotate, pan, and zoom models, Basic model information inspection, Create and edit 3D models, Measure distances and angles, Export to multiple file formats, Generate local PDF reports

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STL Viewer Pro Mensal | $2.99 | per month |
| STL Viewer Studio Mensal | $5.99 | per month |
| STL Viewer Pro Anual | $22.99 | per year |
| STL Viewer Studio Anual | $49.99 | per year |
| STL Viewer Pro Vitalício | $39.99 | one-time |


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is STL Viewer free?

STL Viewer costs $0.99, and also offers in-app purchases.

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

STL Viewer is rated higher. 3D Model Viewer averages 4.4 out of 5 from 363 ratings, while STL Viewer averages 5.0 from 1 ratings.

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

Neither 3D Model Viewer nor STL Viewer shows ads.

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

3D Model Viewer ships an update weekly, and STL Viewer every 4 weeks. Most recently, 3D Model Viewer was updated on November 3, 2026 and STL Viewer on November 3, 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.*