# iRhino 3D vs STL Viewer · Model File Reader

The clearest difference is review sentiment: iRhino 3D at 55% against STL Viewer · Model File Reader's 0%. iRhino 3D also leads on in-app purchases (none vs 3) and ads (none vs shown). STL Viewer · Model File Reader's advantage is rating (5.0 vs 4.6) and device support (4 vs 2). On price and update cadence there is nothing between them.

Both are free to download. STL Viewer · Model File Reader sells 3 in-app purchases, starting at $1.99 per 7 days. iRhino 3D asks for nothing beyond the download.

STL Viewer · Model File Reader holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: iRhino 3D has 81 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 55% of iRhino 3D's written reviews are positive against 0% of STL Viewer · Model File Reader's, so the app with the better star average is not the one people write more warmly about.

iRhino 3D ships an update fortnightly, STL Viewer · Model File Reader every 11 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | iRhino 3D | STL Viewer · Model File Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (81 ratings)](https://appshunter.io/ios/app/irhino-3d/id373666504/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stl-viewer-model-file-reader/id6760254634/reviews)** |
| Number of ratings | **81** | 2 |
| Positive reviews | **55.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 297 MB | 30 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Robert McNeel & Associates](https://appshunter.io/developer/373666507) | [OMER FARUK KIZILTUG](https://appshunter.io/developer/1870337585) |

## What reviewers say

### iRhino 3D

[App page](https://appshunter.io/ios/app/irhino-3d/id373666504)

View and present 3D models from Rhino 3D on your iPhone or iPad. Navigate models with intuitive touch gestures, load files from various sources, and visualize them in augmented reality. Includes a markup tool for annotations.

**Highlights:** 3D model viewing, Touch navigation (pan, zoom, orbit), Cloud storage integration, Augmented Reality (AR) mode, Integrated markup tool

**In-app purchases:** none

**What reviewers like**

- 👍 Smooth and intuitive 3D model manipulation
- 🚀 Fast performance with complex models
- 📱 Great for client presentations and demos
- 💼 Useful for on-the-go model viewing
- 🔄 Good Dropbox integration

**What reviewers complain about**

- 🐛 Frequent crashes on large files
- ❌ Limited to viewer functionality only
- 🚫 No native editing capabilities
- 📉 Poor LiDAR measurement accuracy
- 🔌 No iCloud Drive support

**Reported bugs**

- App crashes with large or complex files
- LiDAR measurements significantly inaccurate (off by ~2x)
- Cannot open local files without cloud storage
- Incompatibility with newer iOS versions
- App crashes during room scanning

**Requested features**

- Full native Rhino with Grasshopper support
- Real editing and modeling tools
- Wireframe and shaded view options
- Orthographic views (top, front, right)
- Texture and material support


### 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 iRhino 3D free?

iRhino 3D is free to download, with no in-app purchases.

### 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, iRhino 3D or STL Viewer · Model File Reader?

STL Viewer · Model File Reader is rated higher. iRhino 3D averages 4.6 out of 5 from 81 ratings, while STL Viewer · Model File Reader averages 5.0 from 2 ratings.

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

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

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

iRhino 3D ships an update fortnightly, and STL Viewer · Model File Reader every 11 days. Most recently, iRhino 3D was updated on October 23, 2026 and STL Viewer · Model File Reader on October 24, 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.*