# Patchwork Explorer vs 3D Model Viewer

The clearest difference is in-app purchases: Patchwork Explorer at none against 3D Model Viewer's 4. Patchwork Explorer also leads on iOS requirement (12.0 vs 17.0). 3D Model Viewer's advantage is update cadence (every 4 days vs every 6 months). On price, ads and device support 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. Patchwork Explorer asks for nothing beyond the download.

Patchwork Explorer ships an update every 6 months, 3D Model Viewer every 4 days. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Patchwork Explorer | 3D Model Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (11 ratings)](https://appshunter.io/ios/app/3d-model-viewer-stl-and-usdz/id1587642013/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 331 MB | 15 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lumiscaphe](https://appshunter.io/developer/595372525) | [Ariel Ortiz](https://appshunter.io/developer/1583119689) |

## What reviewers say

### Patchwork Explorer

[App page](https://appshunter.io/ios/app/patchwork-explorer/id1470044818)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Patchwork Explorer free?

Patchwork Explorer is free to download, with no in-app purchases.

### Is 3D Model Viewer free?

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

### Do Patchwork Explorer or 3D Model Viewer have ads?

Neither Patchwork Explorer nor 3D Model Viewer shows ads.

### Which is updated more often, Patchwork Explorer or 3D Model Viewer?

Patchwork Explorer ships an update every 6 months, and 3D Model Viewer every 4 days. Most recently, Patchwork Explorer was updated on October 6, 2026 and 3D Model Viewer on September 23, 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.*