GLB vs Castle Model Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GLB
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GLB is an app that generates high quality 3D .glb and .stl models from simple text descriptions or images, directly from your phone. Whether you're a designer, game developer, maker, or hobbyist, GLB makes 3D creation fast, accessible, and simple. This app is licensed, not sold, to you and is subject to Apple's Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Castle Model Viewer
View and interact with a wide range of 2D and 3D model formats. Explore models, play animations, and save screenshots. Supports various file types including glTF, X3D, and OBJ, with options to open ZIP archives containing models and textures.
- 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
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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 !
Screenshots
Verdict
The clearest difference is in-app purchases: Castle Model Viewer at none against GLB's 5. Castle Model Viewer also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GLB sells 5 in-app purchases, starting at $9.99 per 7 days. Castle Model Viewer asks for nothing beyond the download.
| Parameter | GLB | Castle Model Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | Yusuf Baha Erarslan | MICHALIS KAMBURELIS |
In-app purchases
GLB
- Weekly Subscription$9.997 Days
- Monthly Subscription$29.991 Month
- 3 Credits$6.99
- 10 Credits$19.99
- 30 Credits$49.99
Castle Model Viewer
No in-app purchases









