# Stamp STL Maker vs OBJ & MTL Simple Viewer

The clearest difference is review sentiment: Stamp STL Maker at 50% against OBJ & MTL Simple Viewer's 13%. Stamp STL Maker also leads on rating (3.0 vs 2.7) and monetization model (ad-supported vs free with in-app purchases). OBJ & MTL Simple Viewer's advantage is ratings volume (3 vs 1) and iOS requirement (11.0 vs 17.0). 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 OBJ & MTL Simple Viewer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Stamp STL Maker holds the better App Store score, 3.0 against 2.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 50% of Stamp STL Maker's written reviews are positive against 13% of OBJ & MTL Simple Viewer's.

## The numbers

| Metric | Stamp STL Maker | OBJ & MTL Simple Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/stamp-stl-maker/id1480171975/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/obj-and-mtl-simple-viewer/id6469348754/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | **50.0% of reviews** | 12.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | — |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 60 MB | 13 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| 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 |


### OBJ & MTL Simple Viewer

[App page](https://appshunter.io/ios/app/obj-and-mtl-simple-viewer/id6469348754)

Easily view and export 3D OBJ files with this application. It supports OBJ, MTL, and texture files, and allows for intuitive manipulation like rotating, panning, and zooming. Gain insights into your models with detailed information and customize rendering options for a better viewing experience.

**Highlights:** Load OBJ, MTL, and texture files, Load from ZIP files, Rotate, pan, and zoom 3D models, Orthogonal and perspective viewing modes, View model info (mesh, material, texture count), Customizable rendering options (faces, edges, points), Clipping plane for interior viewing

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Export to STL, DXF | $1.99 | one-time |


## Frequently asked questions

### Is Stamp STL Maker free?

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

### Is OBJ & MTL Simple Viewer free?

OBJ & MTL Simple Viewer is free to download, with in-app purchases available.

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

Stamp STL Maker is rated higher. Stamp STL Maker averages 3.0 out of 5 from 1 ratings, while OBJ & MTL Simple Viewer averages 2.7 from 3 ratings.

### Do Stamp STL Maker or OBJ & MTL Simple Viewer have ads?

Both Stamp STL Maker and OBJ & MTL Simple Viewer show ads.

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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.*