# STL Simple Viewer vs Inspect T

STL Simple Viewer and Inspect T both sit at 4.3 stars, but that hides the real split: 100% of Inspect T's written reviews are positive against 18% of STL Simple Viewer's. Inspect T also leads on in-app purchases (none vs 4) and ads (none vs shown). STL Simple Viewer's advantage is ratings volume (917 vs 12). On price, rating and device support there is nothing between them.

Both are free to download. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Inspect T asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for STL Simple Viewer against 4.4 for Inspect T. That said, the two scores are not equally well evidenced: STL Simple Viewer has 917 ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 18% of STL Simple Viewer's written reviews are positive against 100% of Inspect T's.

STL Simple Viewer ships an update every 5 months, Inspect T every 3 days. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | STL Simple Viewer | Inspect T |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (917 ratings)](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400/reviews) | **[4.4 (12 ratings)](https://appshunter.io/ios/app/inspect-t/id1521758578/reviews)** |
| Number of ratings | **917** | 12 |
| Positive reviews | 18.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 19 MB | 3 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Victor Bovio](https://appshunter.io/developer/327627515) | [Seyoon Park](https://appshunter.io/developer/1521758580) |

## 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


### Inspect T

[App page](https://appshunter.io/ios/app/inspect-t/id1521758578)

Streamline your Tesla vehicle inspections with a comprehensive checklist and photo organization. Easily export photos by component and generate a summary inspection report to share.

**Highlights:** Tesla vehicle inspection checklist, Add and organize inspection photos, Export photos by component, Generate summary inspection reports, Share inspection reports

**In-app purchases:** none


## Frequently asked questions

### Is STL Simple Viewer free?

STL Simple Viewer is free to download, with in-app purchases available.

### Is Inspect T free?

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

### Which has better reviews, STL Simple Viewer or Inspect T?

Inspect T is rated higher. STL Simple Viewer averages 4.3 out of 5 from 917 ratings, while Inspect T averages 4.4 from 12 ratings.

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

STL Simple Viewer shows ads; Inspect T does not.

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

STL Simple Viewer ships an update every 5 months, and Inspect T every 3 days. Most recently, STL Simple Viewer was updated on October 25, 2026 and Inspect T on October 17, 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.*