# Gantry: Scene Converter — FBX, glTF, OBJ, and STL to USD

> FBX, glTF, OBJ, and STL to USD (iPhone/iPad app by Cristian Diaz.)

- Source: https://appshunter.io/ios/app/gantry-scene-converter/id6761080704 (this page in markdown: same URL + `.md`)
- Developer: [Cristian Diaz](https://appshunter.io/developer/1758352882)
- Category: Developer Tools
- Price: $9.99
- Age rating: 4+
- Requires: iOS 26.0 · 182 MB
- Released: 2026-04-12
- Data updated: 2026-08-11
- User reviews in markdown: https://appshunter.io/ios/app/gantry-scene-converter/id6761080704/reviews.md

## What is Gantry?

Gantry turns 3D files into clean OpenUSD for Apple platforms.

Import almost anything. Inspect the stage. Adjust materials and textures. Export the USD you need—nothing lost.

CONVERSION
In: GLB, glTF, FBX, OBJ, STL, PLY.
Out: USDZ, USD, USDC, USDA.
Preserve composition—references, variants, animation, your edits—or flatten to one self-contained file for AR Quick Look and visionOS.

VIEWPORT
Real-time RealityKit preview. Orbit, pan, and inspect—exactly as they render on Apple platforms. Play, pause, and reset animation in place.

LIGHTING
Curated IBL environments: Neutral, Beach Sunset, Downtown Night, Rooftop Sunny, and more. Exposure, rotation, reflections. Use any as the background.

MATERIALS
Edit per scene, live. Keep them as authored, or convert to USD Preview Surface or MaterialX. Base Color, Metallic, Roughness, Emissive, and Opacity. Swap or clear textures per channel.

TEXTURES
Control file size per channel. JPEG, PNG, AVIF. Quality, resolution, mipmaps.

What you see is what you export.

## Chart rankings

- #50 in Top Paid · Developer Tools (US App Store)


## Version history (last 3 releases)

### 1.5 — 2026-06-06

- Improved export flow
Save to any USD format — .usd, .usdc, .usda, or .usdz — and your scene comes out exactly as you built it: references, variants, animation, and every material edit preserved. Nothing gets flattened or dropped.
 
- Smoother exporting
Exporting large scenes no longer freezes the app — keep working while it saves.
 
- Play/Pause/Reset your animations. 
New play, pause, and stop/reset controls preview embedded animation right in the viewport.
 
- Faster material editing
Change colors and material inputs and see the result update instantly and reliably.
  
- Open more, more easily.
Import FBX, glTF, OBJ, STL, and PLY, drag files straight into the window, and let Gantry handle companion files and folders for you.

- Better viewing. 
 Correct model orientation and grounding, an accurate scale indicator, refined lighting and environment previews, and inspector polish.
 
- More reliable. 
Lots of stability fixes, including smoother opening of files from outside the app.

### 1.4 — 2026-05-06

Editing materials on iPhone is now a single, fluid flow. Tapping a texture channel pushes directly into the editor instead of opening a second sheet on top of the inspector—no more layered modals to dismiss.
                                                                                                                                 
Opening models with external textures or companion files is more reliable. Gantry now correctly identifies required files before prompting and recovers gracefully when folder access is limited rather than dropping the load silently.

The inspector shows geometry information earlier in the loading process, so you get useful data faster on complex scenes.

This update also includes improvements to loading progress accuracy, material selection stability after reload, and file bookmark handling when reopening models after the app has been backgrounded.

### 1.0 — 2026-04-16

No release notes.

## Related topics

[zoetrope strobe](https://appshunter.io/ios/topics/zoetrope-strobe)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-11.*