# 3D Model Viewer vs LeanGo Trace DEV

The clearest difference is in-app purchases: LeanGo Trace DEV at none against 3D Model Viewer's 5. LeanGo Trace DEV also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. 3D Model Viewer sells 5 one-off in-app purchases. LeanGo Trace DEV asks for nothing beyond the download.

## The numbers

| Metric | 3D Model Viewer | LeanGo Trace DEV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (328 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878/reviews)** | — |
| Number of ratings | **328** | — |
| Positive reviews | 59.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 121 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [健 钟](https://appshunter.io/developer/1051588602) | [GRWAN GROUP FZE](https://appshunter.io/developer/1619845290) |

## What reviewers say

### 3D Model Viewer

[App page](https://appshunter.io/ios/app/3d-model-viewer-ar-view/id1105242878)

View and interact with various 3D model formats in both AR and 3D modes. This intuitive tool supports local and cloud documents, custom backgrounds, and shadow casting. Easily import models via multiple methods and share your creations.

**Highlights:** AR and 3D viewing modes, Supports numerous 3D file formats, Local and cloud document integration, Customizable backgrounds and shadows, Model information display (size, volume, etc.), Multiple import and sharing options

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Model & Screenshot Output | $1.99 | one-time |
| Background from Album | $1.99 | one-time |
| Large File Model | $1.99 | one-time |
| All Features | $5.99 | one-time |

**What reviewers like**

- 👍 Great for viewing 3D models
- 🚀 Fast model loading
- 🔒 Supports many file formats

**What reviewers complain about**

- 🐛 Frequent crashes and errors
- 💸 Intrusive ads and paywalls
- 🤯 Difficult to use interface
- 🚫 Cannot open large files without paying

**Reported bugs**

- App crashes when trying to delete models
- Cannot open .3mf and .glb files
- Texture and shading issues with some models

**Requested features**

- Add support for more 3D file formats
- Improve model rendering quality
- Implement better file management options
- Provide more customization and control over model view


### LeanGo Trace DEV

[App page](https://appshunter.io/ios/app/leango-trace-dev/id6471980417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is LeanGo Trace DEV free?

LeanGo Trace DEV is free to download, with no in-app purchases.

### Do 3D Model Viewer or LeanGo Trace DEV have ads?

3D Model Viewer shows ads; LeanGo Trace DEV does not.

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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.*