# 3D Model Viewer & Converter vs STEP Viewer

The clearest difference is rating: 3D Model Viewer & Converter at 1.5 against STEP Viewer's 1.0. STEP Viewer's advantage is in-app purchases (none vs 10) and update cadence (every 5 days vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. 3D Model Viewer & Converter sells 10 in-app purchases, starting at $2.99 per 7 days. STEP Viewer asks for nothing beyond the download.

3D Model Viewer & Converter holds the better App Store score, 1.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

3D Model Viewer & Converter ships an update every 3 weeks, STEP Viewer every 5 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | 3D Model Viewer & Converter | STEP Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/3d-model-viewer-and-converter/id6748610196/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/step-viewer/id6756539299/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 18 MB | 61 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [维 艾](https://appshunter.io/developer/1771300149) | [Smart Cube Labs Co., Ltd.](https://appshunter.io/developer/1456342688) |

## What reviewers say

### 3D Model Viewer & Converter

[App page](https://appshunter.io/ios/app/3d-model-viewer-and-converter/id6748610196)

This tool allows you to open, view, and convert a wide variety of 3D file formats on your Apple devices. It offers basic editing, cross-sectioning, and exploded views, with options for batch conversion and exporting projected views.

**Highlights:** Import numerous 3D formats, Convert between popular 3D formats, Basic editing tools, Cross-section and exploded views, Batch export support, Export projected views as SVG, Offline functionality

**Features:** Family Sharing, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Flex | $2.99 | per 7 days |
| Pro Light | $9.99 | per month |
| Pro Infinity | $59.99 | per year |
| Export as PNG | $2.99 | one-time |
| Export as OBJ | $3.99 | one-time |
| Export as USDZ | $3.99 | one-time |
| Export as STL | $3.99 | one-time |
| Unlock Projection View Export | $4.99 | one-time |
| Cross Section View | $6.99 | one-time |
| Export all formats | $16.99 | one-time |


### STEP Viewer

[App page](https://appshunter.io/ios/app/step-viewer/id6756539299)

View and interact with 3D CAD files directly on your mobile device. Measure dimensions, rotate, zoom, and save models in a common format without needing desktop software.

**Highlights:** Open STEP files from file manager, 3D model measurement tools, Six fixed views, Pinch to zoom, pan, and rotate, Save as GLB, Progress indicator for large files, Multilingual support

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D Model Viewer & Converter free?

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

### Is STEP Viewer free?

STEP Viewer is free to download, with no in-app purchases.

### Which has better reviews, 3D Model Viewer & Converter or STEP Viewer?

3D Model Viewer & Converter is rated higher. 3D Model Viewer & Converter averages 1.5 out of 5 from 2 ratings, while STEP Viewer averages 1.0 from 1 ratings.

### Do 3D Model Viewer & Converter or STEP Viewer have ads?

Neither 3D Model Viewer & Converter nor STEP Viewer shows ads.

### Which is updated more often, 3D Model Viewer & Converter or STEP Viewer?

3D Model Viewer & Converter ships an update every 3 weeks, and STEP Viewer every 5 days. Most recently, 3D Model Viewer & Converter was updated on October 30, 2026 and STEP Viewer on October 30, 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.*