# 3D Model Viewer vs STL Viewer · Model File Reader

The clearest difference is rating: STL Viewer · Model File Reader at 5.0 against 3D Model Viewer's 3.5. STL Viewer · Model File Reader also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). 3D Model Viewer's advantage is ads (none vs shown) and ratings volume (11 vs 2). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. 3D Model Viewer sells 4 in-app purchases, starting at $2.99 per 7 days and STL Viewer · Model File Reader sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

STL Viewer · Model File Reader holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: 3D Model Viewer has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

3D Model Viewer ships an update weekly, STL Viewer · Model File Reader every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 3D Model Viewer | STL Viewer · Model File Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (11 ratings)](https://appshunter.io/ios/app/3d-model-viewer-stl-and-usdz/id1587642013/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stl-viewer-model-file-reader/id6760254634/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 15 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Ortiz](https://appshunter.io/developer/1583119689) | [OMER FARUK KIZILTUG](https://appshunter.io/developer/1870337585) |

## What reviewers say

### 3D Model Viewer

[App page](https://appshunter.io/ios/app/3d-model-viewer-stl-and-usdz/id1587642013)

Easily view and interact with 3D models in various formats like USDZ, STL, and OBJ. Explore your designs with intuitive gestures, high-performance rendering, and augmented reality capabilities. Record animations of your models for sharing.

**Highlights:** View USDZ, STL, OBJ, PLY files, Intuitive gesture controls, High-performance rendering, Augmented Reality (AR) visualization, Record rotation animations, Supports OBJ with textures

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $2.99 | per 7 days |
| All Access | $3.99 | per month |
| All Access | $14.99 | per year |
| One-time payment | $3.99 | one-time |


### STL Viewer · Model File Reader

[App page](https://appshunter.io/ios/app/stl-viewer-model-file-reader/id6760254634)

Quickly view and interact with 3D model files. Rotate, zoom, and project models into your environment using augmented reality. Offers customization options and multi-model support.

**Highlights:** Fast STL file viewing, 3D model rotation and zoom, Augmented Reality (AR) projection, Customizable model and background colors, Multi-model support, Grid viewer and lighting options

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $19.99 | per year |


## Frequently asked questions

### Is 3D Model Viewer free?

3D Model Viewer is free to download, with in-app purchases available.

### Is STL Viewer · Model File Reader free?

STL Viewer · Model File Reader is free to download, with in-app purchases available.

### Which has better reviews, 3D Model Viewer or STL Viewer · Model File Reader?

STL Viewer · Model File Reader is rated higher. 3D Model Viewer averages 3.5 out of 5 from 11 ratings, while STL Viewer · Model File Reader averages 5.0 from 2 ratings.

### Do 3D Model Viewer or STL Viewer · Model File Reader have ads?

STL Viewer · Model File Reader shows ads; 3D Model Viewer does not.

### Which is updated more often, 3D Model Viewer or STL Viewer · Model File Reader?

3D Model Viewer ships an update weekly, and STL Viewer · Model File Reader every 2 weeks. Most recently, 3D Model Viewer was updated on November 3, 2026 and STL Viewer · Model File Reader on October 31, 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.*