Comparison

Octane X vs Khronos glTF Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Octane X

This powerful GPU rendering application brings professional-grade 3D rendering capabilities to iPad Pro. It offers a full suite of features for visual effects, motion graphics, gaming, and design, with an interface optimized for touch and Apple Pencil, while also supporting advanced external peripherals.

Highlights
  • Unbiased, spectrally-correct GPU rendering
  • Optimized touch and Apple Pencil interface
  • Support for external keyboards, trackpads, and monitors
  • Node-based material, shader, and scene graph editor
  • AI Denoiser for production-ready results
  • ACES, OCIO, and deep pixel EXR rendering
Read full description

Octane X, the world’s first and fastest unbiased, spectrally-correct GPU production renderer, is now available for the first time on iPad Pro (M series models only) - empowering artist workflows across visual effects, motion graphics, gaming, design, concept art and architectural visualization Octane X for iPad Pro supports all features of Octane X macOS standalone desktop application through a new interface designed from the ground up for easy scene navigation and editing using touch and Apple Pencil on iPad Pro. Power users can enable an advanced UX with support for keyboards, trackpads, external monitors, bluetooth mice and stage manager to get full parity with the Octane X standalone desktop application on macOS. Octane X accelerates modern creative workflows with ACES, OCIO and deep pixel EXR rendering, a powerful node-based material, shader and scene graph editor, and the industry’s most advanced production ready AI Denoiser. The Octane X standalone features and user guide is available here: https://docs.otoy.com/StandaloneH_STA/StandaloneManual.htm Octane X for iPad Pro only supports iPad Pro devices with the M series chipset, running iPadOS 26 and later.

About

Khronos glTF Viewer

View and interact with 3D models in the glTF 2.0 format. Explore sample models with advanced rendering or display your own files. Experience models in augmented reality.

Highlights
  • View glTF 3D models
  • Augmented reality mode
  • Rotate, zoom, and pan models
  • Browse and display own glTF files
  • Supports PBR and glTF extensions
Features
Read full description

The Khronos glTF Viewer is an easy-to-use application that lets you view and interact with 3D models in the Khronos glTF 2.0 file format, and includes support for viewing in augmented reality. glTF is the open, industry-standard 3D asset format for the efficient transmission and loading of 3D scenes and models by engines and applications. It is an ISO/IEC International Standard that has become the 3D asset delivery format of choice across the web and real-time applications. Key App Features: • Built-In Sample Models – View sample glTF models showcasing features like physically-based rendering and animation • Object Mode – Rotate, zoom, or pan a 3D model to view it from various angles • AR Mode – Place a 3D model on real-world surfaces with augmented reality • File Browser – Browse and display your own glTF files, including optional integration with iCloud Drive All the features found in the core glTF 2.0 specification are supported, plus a number of glTF extensions, including Physically Based Rendering (PBR) effects such as clearcoat. For a full list of glTF extensions currently supported, please view the GitHub repository. This reference application is an Open Source project supported by the Khronos Group and released under an Apache 2.0 license. Developers are invited to contribute to the ongoing development of the project and provide feedback by raising issues on the GitHub repository. Developers may also create derivative works based on the application, subject to the terms of the Apache 2.0 license.

Screenshots

Khronos glTF Viewer4 screens

Verdict

The call

The clearest difference is rating: Octane X at 3.7 against Khronos glTF Viewer's 3.2. Octane X also leads on ratings volume (31 vs 6). Khronos glTF Viewer's advantage is iOS requirement (16.0 vs 26.0). On price, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Octane X holds the better App Store score, 3.7 against 3.2. That said, the two scores are not equally well evidenced: Octane X has 31 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 51% of Octane X's written reviews are positive against 50% of Khronos glTF Viewer's.

Scorecard3 real differences · 7 level
Octane X versus Khronos glTF Viewer: the parameters behind the verdict, then further details
ParameterOctane XKhronos glTF Viewer
PriceFreeFree
Rating3.7 (31 ratings) — better3.2 (6 ratings)
Positive reviews51.2% of reviews — better50.0% of reviews
Number of ratings31 — better6
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPad, MaciPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size1.1 GB34 MB
Age rating4+12+
DeveloperOTOY inc.The Khronos Group, Inc.

Customer experience

Octane X

All ratings31 ratings
Positive61.3%
Neutral6.5%
Negative32.3%
Written reviews41 reviews
Positive51.2%
Neutral12.2%
Negative36.6%

Khronos glTF Viewer

All ratings6 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Octane X

Reported bugs

8 issues
  • 🐛 Gray screen on iPadOS 27
  • 🐛 Incompatible with iPadOS 17
  • 🐛 No Render GPU error on M1 Macs with Sonoma
  • 🐛 Grey screen and doesn't load
  • 🐛 Not working since iPadOS 17
Show 3 more
  • 🐛 Stuck at rendering after iPadOS 17 update
  • 🐛 Rendering not working since iPad OS 17
  • 🐛 Crashes when viewing all items under nodes

Requested features

6 requests
  • Tutorials for specific materials (hair, glass, water)
  • Support for Nomad Sculpt OBJ/GLB import
  • UI improvements for Apple Pencil users
  • Polygon-based modeling and animation tools
  • Add Maya and Houdini support
Show 1 more
  • Add support for importing obj/glb from Nomad Sculpt

Khronos glTF Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Octane X

No in-app purchases

None

Khronos glTF Viewer

No in-app purchases

Questions

Is Octane X free?
Octane X is free to download, with no in-app purchases.
Is Khronos glTF Viewer free?
Khronos glTF Viewer is free to download, with no in-app purchases.
Which has better reviews, Octane X or Khronos glTF Viewer?
Octane X is rated higher. Octane X averages 3.7 out of 5 from 31 ratings, while Khronos glTF Viewer averages 3.2 from 6 ratings.
Do Octane X or Khronos glTF Viewer have ads?
Neither Octane X nor Khronos glTF Viewer shows ads.

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