# 3D Model Viewer vs SolidInsight

The clearest difference is review sentiment: SolidInsight at 100% against 3D Model Viewer's 0%. SolidInsight also leads on rating (4.4 vs 3.5) and iOS requirement (13.0 vs 17.0). 3D Model Viewer's advantage is update cadence (weekly vs every 5 weeks). On price, ratings volume, ads 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 SolidInsight sells 3 in-app purchases, starting at $46.99 per year. Whichever you choose, the download price is not the number that matters.

SolidInsight holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 11 and 7 respectively. Written reviews point the same way: 0% of 3D Model Viewer's written reviews are positive against 100% of SolidInsight's.

3D Model Viewer ships an update weekly, SolidInsight every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 3D Model Viewer | SolidInsight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (11 ratings)](https://appshunter.io/ios/app/3d-model-viewer-stl-and-usdz/id1587642013/reviews) | **[4.4 (7 ratings)](https://appshunter.io/ios/app/solidinsight/id1601944650/reviews)** |
| Number of ratings | **11** | 7 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 15 MB | 258 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Ortiz](https://appshunter.io/developer/1583119689) | [SHANDONG HOTEAM SOFTWARE CO., LTD.](https://appshunter.io/developer/954963043) |

## 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 |


### SolidInsight

[App page](https://appshunter.io/ios/app/solidinsight/id1601944650)

View and collaborate on 2D and 3D CAD files on your mobile device without needing expensive desktop software. Measure designs, access properties, and share feedback instantly.

**Highlights:** Supports major 2D/3D CAD formats, View models and drawings on mobile, Measure design dimensions, Access design properties, Markup and share comments, Isolate/hide components, Browse assembly tree

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Annual Subscription | $46.99 | per year |
| Premium Annual Subscription | $94.99 | per year |
| Unlock features in a design | $0.99 | one-time |


## Frequently asked questions

### Is 3D Model Viewer free?

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

### Is SolidInsight free?

SolidInsight is free to download, with in-app purchases available.

### Which has better reviews, 3D Model Viewer or SolidInsight?

SolidInsight is rated higher. 3D Model Viewer averages 3.5 out of 5 from 11 ratings, while SolidInsight averages 4.4 from 7 ratings.

### Do 3D Model Viewer or SolidInsight have ads?

Neither 3D Model Viewer nor SolidInsight shows ads.

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

3D Model Viewer ships an update weekly, and SolidInsight every 5 weeks. Most recently, 3D Model Viewer was updated on November 3, 2026 and SolidInsight on November 3, 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.*