# 3D Model Viewer vs STL Viewer

The clearest difference is review sentiment: STL Viewer at 100% against 3D Model Viewer's 0%. STL Viewer also leads on rating (5.0 vs 3.5). 3D Model Viewer's advantage is price (Free vs $0.99) and update cadence (weekly vs every 4 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

3D Model Viewer is free to download; STL Viewer costs $0.99 up front. 3D Model Viewer sells 4 in-app purchases, starting at $2.99 per 7 days 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 3.5. That said, the two scores are not equally well evidenced: 3D Model Viewer has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% 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 | [3.5 (11 ratings)](https://appshunter.io/ios/app/3d-model-viewer-stl-and-usdz/id1587642013/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 0.0% 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 | 15 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Ortiz](https://appshunter.io/developer/1583119689) | [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-stl-and-usdz/id1587642013)

Easily view and interact with 3D models in various formats like USDZ, STL, and OBJ. Explore your designs with intuitive gestures, high-performance rendering, and augmented reality capabilities. Record animations of your models for sharing.

**Highlights:** View USDZ, STL, OBJ, PLY files, Intuitive gesture controls, High-performance rendering, Augmented Reality (AR) visualization, Record rotation animations, Supports OBJ with textures

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $2.99 | per 7 days |
| All Access | $3.99 | per month |
| All Access | $14.99 | per year |
| One-time payment | $3.99 | one-time |


### 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 3.5 out of 5 from 11 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.*