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Open3D: STL & 3D Model Viewer

Open3D: STL & 3D Model Viewer

View STL, GLB, STEP, DXF & OBJ

29 ratings
8 reviews
With Ads
🔧 Utilities
🎨 Graphics & Design
Free
With Ads

Details

Released
May 28, 2026
Updated
October 29, 2026

Features

Developer

Rajesh Konatala
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About

View and edit a wide range of 3D model file formats directly on your device. Inspect models for 3D printing, convert between formats, and even view them in augmented reality. All processing is done locally, ensuring your files remain private.

✓Supports over 15 3D file formats
✓On-device AR viewing with Quick Look
✓3D printing readiness checks
✓Model conversion and export
✓Offline functionality
✓Local file processing, no cloud upload
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What's New in Open3D

1.4.6

October 29, 2026

Export & convert Turn OBJ, PLY, 3MF, FBX, DAE, 3DS and more into STL for 3D printing or GLB for sharing. Files save straight to your Downloads folder — no extra apps, no online converter, everything happens on-device.

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User reviews

Most RecentHighest RatedLowest Rated

Garbage ads

Littered with intrusive garbage ads, often for “adult” themed products.
--LD

Take my money

Functionality is great but the ads are a bummer. I’d gladly pay a few bucks to remove them. Do you plan to add that?
CcontemptuousMuskrat

Response from developer

Hello Ad free version is planned and will be available soon.

Excellent

My only wish is that it supported loading multiple models in, like for a scene.
Aanon41209

Response from developer

Thank you for your feedback. I will add multi file/scene option soon

A Hidden Gem

One of the best STL AND 3D model viewing apps available. Consistent updates, great usability and easy to recommend
OHOh Hammy

Response from developer

Thank you. If you ever feel like if a feature is missing or not working properly, please write at support@open3d.app and i will fix it straight away

Best multi 3D file viewer

Very impressed with the simplicity, yet great features. I just wish you could also convert files, lines from OBJ to STL for example.

Highly recommend!
AAuthentyc

Response from developer

Thanks Authentyc — really glad you're enjoying it. OBJ-to-STL conversion is on the way; the engine already does it, we just need to wire up the button. Coming in the next update

See 3 more reviews

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FAQ

What 3D file formats does Open3D support?

Open3D supports a wide array of mesh formats including STL, GLB, GLTF, OBJ, PLY, 3MF, FBX, DAE, 3DS, and USDZ. It also handles CAD formats like STEP/STP, IGES/IGS, and DXF.

Can I view 3D models in augmented reality with Open3D?

Yes, Open3D allows you to view 3D models in AR using Apple's Quick Look feature, specifically for USDZ files. This lets you place and interact with your 3D models in your real-world environment.

Does Open3D have ads?

Yes, Open3D contains advertisements. As a free application, ads are displayed to support its continued development and availability.

How does Open3D help with 3D printing?

Open3D offers several features for 3D printing, including print-readiness checks for manifold detection, overhangs, and wall thickness. It also provides estimates for weight, filament length, and cost, and can check bed-fit for popular printers.

Can I convert 3D models using Open3D?

Yes, Open3D allows you to convert and export models between formats. For example, you can turn OBJ, PLY, FBX, and others into STL for 3D printing or GLB for sharing, all processed on your device.

Is Open3D available on Android?

The current information indicates Open3D is supported on iPhone, iPad, and iPod. Specific Android availability is not detailed in the provided data.

How often is Open3D updated?

The latest version of Open3D was released on October 29, 2026, indicating recent activity. Updates typically occur to add features, improve performance, and ensure compatibility with new device operating system versions.

What is the age rating for Open3D?

Open3D has an age rating of 4+. This suggests it is suitable for children and general audiences, with no mature content.