# STL Simple Viewer vs Nozzly

The clearest difference is review sentiment: Nozzly at 100% against STL Simple Viewer's 18%. Nozzly also leads on rating (5.0 vs 4.3) and ads (none vs shown). STL Simple Viewer's advantage is ratings volume (909 vs 1). On price, in-app purchases, monetization model 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 and Nozzly sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Nozzly 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 909 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 Nozzly's.

STL Simple Viewer ships an update every 5 months, Nozzly every 2 days. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | STL Simple Viewer | Nozzly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (909 ratings)](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nozzly/id6780641595/reviews)** |
| Number of ratings | **909** | 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 2 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 19 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Victor Bovio](https://appshunter.io/developer/327627515) | [ALEJANDRO ROSALES ARZOLA](https://appshunter.io/developer/6780642017) |

## 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


### Nozzly

[App page](https://appshunter.io/ios/app/nozzly/id6780641595)

Calculate the true selling price of your 3D prints by factoring in material, electricity, and desired profit margin. Designed for makers who sell their creations, this tool helps you avoid undercharging for your work.

**Highlights:** Calculate selling price with material, electricity, and margin, Save printers, filaments, and designs, Add photos and SKUs per figure, Price rounding and currency selection, Share quotes instantly, Generate PDF quotes with business details

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nozzly Premium | $9.99 | one-time |


## Frequently asked questions

### Is STL Simple Viewer free?

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

### Is Nozzly free?

Nozzly is free to download, with in-app purchases available.

### Which has better reviews, STL Simple Viewer or Nozzly?

Nozzly is rated higher. STL Simple Viewer averages 4.3 out of 5 from 909 ratings, while Nozzly averages 5.0 from 1 ratings.

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

STL Simple Viewer shows ads; Nozzly does not.

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

STL Simple Viewer ships an update every 5 months, and Nozzly every 2 days. Most recently, STL Simple Viewer was updated on October 19, 2026 and Nozzly on October 11, 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.*