# Quick STL Viewer vs OpenShape3D

The clearest difference is in-app purchases: OpenShape3D at none against Quick STL Viewer's 3. Quick STL Viewer's advantage is review sentiment (100% vs 75%) and update cadence (every 6 days vs every 3 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. Quick STL Viewer sells 3 in-app purchases, starting at $2.99 per 7 days. OpenShape3D asks for nothing beyond the download.

Quick STL Viewer holds the better App Store score, 4.9 against 4.8. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews point the same way: 100% of Quick STL Viewer's written reviews are positive against 75% of OpenShape3D's.

Quick STL Viewer ships an update every 6 days, OpenShape3D every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Quick STL Viewer | OpenShape3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (12 ratings)](https://appshunter.io/ios/app/quick-stl-viewer/id6761406893/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/openshape3d/id6792536439/reviews) |
| Number of ratings | **12** | 4 |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 76 MB | 51 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [KEAT MEN TANG](https://appshunter.io/developer/1886302384) | [Laan Labs](https://appshunter.io/developer/310916919) |

## What reviewers say

### Quick STL Viewer

[App page](https://appshunter.io/ios/app/quick-stl-viewer/id6761406893)

Easily open and preview 3D STL files in a smooth, responsive environment. Inspect models with rotation, zoom, and wireframe modes. Customize colors for better visibility without needing an account.

**Highlights:** Instant STL file opening, Smooth 3D model exploration, Rotate and zoom functionality, Wireframe mode for mesh inspection, Customizable object and background colors, No account required

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan Weekly | $2.99 | per 7 days |
| Pro Plan Yearly | $24.99 | per year |
| Quick STL Viewer Lifetime | $34.99 | one-time |


### OpenShape3D

[App page](https://appshunter.io/ios/app/openshape3d/id6792536439)

Create precise 3D models directly on your mobile device using intuitive touch controls. This app offers robust sketching tools, advanced solid modeling operations, and various viewing modes, all powered by a professional-grade geometry kernel.

**Highlights:** Direct-modeling CAD for touch, Professional-grade B-rep kernel, Advanced 2D sketching with constraints, Extrude, revolve, sweep, and loft operations, Live preview for fillets and chamfers, Import/export STL, OBJ, DXF, and more, AR preview with Quick Look

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Quick STL Viewer free?

Quick STL Viewer is free to download, with in-app purchases available.

### Is OpenShape3D free?

OpenShape3D is free to download, with no in-app purchases.

### Which has better reviews, Quick STL Viewer or OpenShape3D?

Quick STL Viewer is rated higher. Quick STL Viewer averages 4.9 out of 5 from 12 ratings, while OpenShape3D averages 4.8 from 4 ratings.

### Do Quick STL Viewer or OpenShape3D have ads?

Neither Quick STL Viewer nor OpenShape3D shows ads.

### Which is updated more often, Quick STL Viewer or OpenShape3D?

Quick STL Viewer ships an update every 6 days, and OpenShape3D every 3 weeks. Most recently, Quick STL Viewer was updated on November 5, 2026 and OpenShape3D on October 31, 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.*