# Stamp STL Maker vs STL Simple Viewer

The clearest difference is rating: STL Simple Viewer at 4.3 against Stamp STL Maker's 3.0. STL Simple Viewer also leads on ratings volume (909 vs 1). Stamp STL Maker's advantage is review sentiment (50% vs 18%) and update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stamp STL Maker sells 5 in-app purchases, starting at $2.99 per month and STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

STL Simple Viewer holds the better App Store score, 4.3 against 3.0. 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 complicate that: 50% of Stamp STL Maker's written reviews are positive against 18% of STL Simple Viewer's, so the app with the better star average is not the one people write more warmly about.

Stamp STL Maker ships an update every 2 months, STL Simple Viewer every 5 months. The most recent releases landed on September 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Stamp STL Maker | STL Simple Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/stamp-stl-maker/id1480171975/reviews) | **[4.3 (909 ratings)](https://appshunter.io/ios/app/stl-simple-viewer/id1493598400/reviews)** |
| Number of ratings | 1 | **909** |
| Positive reviews | **50.0% of reviews** | 18.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 60 MB | 19 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CloudSpirit Limited](https://appshunter.io/developer/816154234) | [Victor Bovio](https://appshunter.io/developer/327627515) |

## What reviewers say

### Stamp STL Maker

[App page](https://appshunter.io/ios/app/stamp-stl-maker/id1480171975)

Design custom 3D printable stamps from logos, images, or text. Generate high-quality STL files for your 3D printer with features like curved text and 3D preview.

**Highlights:** Create stamps from logos, images, or text, Generate STL files for 3D printing, Multiple base shapes, Curved text alignment, Adjustable stamp depth, Intuitive 3D preview

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stamp Maker Pro Monthly | $2.99 | per month |
| Stamp Maker Pro Yearly | $14.99 | per year |
| Font Pack Classic | $1.99 | one-time |
| Font Pack Signature | $1.99 | one-time |
| Stamp Maker Pro Lifetime | $19.99 | one-time |


### 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


## Frequently asked questions

### Is Stamp STL Maker free?

Stamp STL Maker is free to download, with in-app purchases available.

### Is STL Simple Viewer free?

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

### Which has better reviews, Stamp STL Maker or STL Simple Viewer?

STL Simple Viewer is rated higher. Stamp STL Maker averages 3.0 out of 5 from 1 ratings, while STL Simple Viewer averages 4.3 from 909 ratings.

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

Both Stamp STL Maker and STL Simple Viewer show ads.

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

Stamp STL Maker ships an update every 2 months, and STL Simple Viewer every 5 months. Most recently, Stamp STL Maker was updated on September 25, 2026 and STL Simple Viewer on October 19, 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.*