# Castle Model Viewer — Viewer for 3D models

> Open-source viewer for 3D and 2D model formats, supporting animations and screenshots. (iPhone/iPad app by MICHALIS KAMBURELIS.)

- Source: https://appshunter.io/ios/app/castle-model-viewer/id6752208775 (this page in markdown: same URL + `.md`)
- Developer: [MICHALIS KAMBURELIS](https://appshunter.io/developer/1838215378)
- Category: Graphics & Design, Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 72 MB
- Languages: American English
- Released: 2025-09-11
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/castle-model-viewer/id6752208775/reviews.md

## What is Castle Model Viewer?

Viewer for 3D and 2D model formats supported by the Castle Game Engine: 

- glTF
- X3D
- VRML
- IFC
- Spine JSON
- sprite sheets (in Castle Game Engine, Cocos2D and Starling XML formats)
- MD3
- Wavefront OBJ
- 3DS
- STL
- Collada
- and more.

In addition to the above formats, it also allows to open a ZIP file that contains a single model and associated media (like textures, sounds etc.).

You can change navigation type (walk, fly, examine, 2D), jump between viewpoints, play chosen animations, save a screenshot, display scene statistics (triangle, vertex count) and more.

The application comes with a few sample files, and naturally you can open your own 3D and 2D model files.

The models must be self-contained, e.g. you have to

- use GLB with all the textures packed in one file,
- or X3D with all textures expressed as PixelTexture or data URI,
- or just put your model with data (like textures) inside a zip.
- We have documented how to make your models self-contained here: https://castle-engine.io/castle-model-viewer-mobile

This is an open-source software, available to you for free. There are no ads or tracking. We appreciate if you can support us: https://www.patreon.com/castleengine !

## Key features

- Supports glTF, X3D, VRML, IFC, Spine JSON, and more
- Open ZIP files with models and textures
- Change navigation types (walk, fly, examine, 2D)
- Play animations
- Save screenshots
- Display scene statistics


## Frequently asked questions about Castle Model Viewer

### What 3D model formats does Castle Model Viewer support?

Castle Model Viewer supports a wide array of formats including glTF, X3D, VRML, IFC, Spine JSON, MD3, Wavefront OBJ, 3DS, STL, and Collada, among others. It can also open ZIP files containing a single model and its associated media.

### Can I view my own 3D models with Castle Model Viewer?

Yes, you can open your own 3D and 2D model files. The application also comes with sample files for demonstration. For best results, ensure your models are self-contained, with textures packed or embedded.

### Does Castle Model Viewer have ads?

No, Castle Model Viewer is an open-source software that is completely free to use and does not contain any advertisements or tracking. The developers appreciate support through their Patreon page.

### What devices is Castle Model Viewer compatible with?

Castle Model Viewer is available for iPhone, iPad, and iPod. It is designed to run on iOS devices.

### How often is Castle Model Viewer updated?

The application was last updated on September 11, 2025, with version 1.0. As an open-source project, updates may occur based on community contributions and developer availability.

### What is the age rating for Castle Model Viewer?

Castle Model Viewer has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains content generally considered appropriate for all ages.

### Can I play animations within Castle Model Viewer?

Yes, you can play chosen animations directly within the application. This feature allows for dynamic viewing of models that include animated elements.

### What kind of navigation options are available in Castle Model Viewer?

Castle Model Viewer offers several navigation types, including 'walk', 'fly', 'examine', and '2D' modes. You can also jump between different viewpoints within the scene.

## Version history (last 1 release)

### 1.0 — 2025-09-11

No release notes.

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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 2026-06-01.*