# STL Simple Viewer vs STL Viewer

The clearest difference is review sentiment: STL Viewer at 100% against STL Simple Viewer's 18%. STL Viewer also leads on rating (5.0 vs 4.3) and ads (none vs shown). STL Simple Viewer's advantage is price (Free vs $0.99) and ratings volume (923 vs 1). On in-app purchases, device support and iOS requirement there is nothing between them.

STL Simple Viewer is free to download; STL Viewer costs $0.99 up front. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 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 4.3. That said, the two scores are not equally well evidenced: STL Simple Viewer has 923 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 18% of STL Simple Viewer's written reviews are positive against 100% of STL Viewer's.

STL Simple Viewer ships an update every 5 months, STL Viewer every 4 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | STL Simple Viewer | STL Viewer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.3 (923 ratings)](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stl-viewer-3d-mesh/id6445801487/reviews)** |
| Number of ratings | **923** | 1 |
| Positive reviews | 18.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 19 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Victor Bovio](https://appshunter.io/developer/327627515) | [Felipe Marques de Barros](https://appshunter.io/developer/1459294806) |

## What reviewers say

### STL Simple Viewer

[App page](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400)

Easily view and interact with 3D STL CAD models. Supports various file types and offers advanced rendering options for detailed analysis. Get model information and explore interiors with clipping planes.

**Highlights:** View ASCII and Binary STL files, Load STL from ZIP, Rotate, pan, and zoom, Orthogonal and Perspective modes, Model info (triangle count, bounding box), Rendering options (faces, edges, transparency), Clipping plane for interiors

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version (1 week plan) | $0.99 | per 7 days |
| Pro version (1 month plan) | $1.99 | per month |
| Remove Ads | $2.99 | one-time |
| Export Pack | $3.99 | one-time |

**What reviewers like**

- 🚀 Simple and intuitive viewer
- 👍 Useful viewing options
- 💡 Supports multiple file formats

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔋 High battery consumption
- 🚨 Excessive and intrusive ads
- 🔍 Limited functionality for larger files

**Reported bugs**

- App crashes when opening larger STL files
- Inability to open some file formats
- Ads continue to appear even after paying for ad removal

**Requested features**

- Add ability to save color/lighting settings
- Improve stability and reduce crashes
- Provide an ad-free paid version


### 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 STL Simple Viewer free?

STL Simple 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, STL Simple Viewer or STL Viewer?

STL Viewer is rated higher. STL Simple Viewer averages 4.3 out of 5 from 923 ratings, while STL Viewer averages 5.0 from 1 ratings.

### Do STL Simple Viewer or STL Viewer have ads?

STL Simple Viewer shows ads; STL Viewer does not.

### Which is updated more often, STL Simple Viewer or STL Viewer?

STL Simple Viewer ships an update every 5 months, and STL Viewer every 4 weeks. Most recently, STL Simple 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.*