Graspable vs Unreal Engine

Unreal is for native, high-end real-time graphics; Graspable is for WebXR built by an agent. Here is what each gives up.

Unreal Engine is Epic’s source-available C++ and Blueprint engine, with OpenXR for headsets and no web export. Facts about Unreal Engine are from its own pages, listed at the end, last checked on 3 October 2026. If something is out of date, tell us.

Choose Graspable when

you want a headset experience from a description, opened from a link, built and checked on your computer with your own AI account.

Choose Unreal Engine when

you need top rendering, MetaHuman, large native projects, and a team that already builds in Unreal.

Side by side

What you build
GraspableA desktop app for macOS (Windows and Linux are coming). You describe a 3D or XR scene; an AI agent builds it as a real React Three Fiber and WebXR project in a folder on your computer.
Unreal EngineNative apps for desktop, consoles, Quest (OpenXR and the Meta plugin), Vision Pro (experimental, Mac only), Android XR (developer preview). No web or WebXR export.
The AI
GraspableYour own AI account: an API key from Anthropic, OpenAI, OpenRouter and others, a ChatGPT subscription, or Claude Code with a Claude subscription. Models come from the provider’s own list.
Unreal EngineAn experimental AI Assistant that answers questions and generates snippets (5.7), and an Unreal MCP plugin (5.8) for your own agent.
Where it runs
GraspableOn your computer. Projects, previews, builds, keys and sign-ins stay there. A paid plan can move a project to a Cloud Agent and back.
Unreal EngineTens of gigabytes on your computer; long compiles.
Checking the result
GraspableA run ends only when the project builds and loads in a real browser without errors; recorded headset sessions are replayed after every change.
Unreal EnginePlay in editor, devices, the Meta XR Simulator (Windows); whatever your agent wires through MCP.
Headsets and devices
GraspableAny browser with WebXR. The app emulates a Meta Quest 3 or Meta VR Glasses in the preview; a project opens on a Quest or an Apple Vision Pro over Wi-Fi or USB.
Unreal EngineQuest and Meta VR Glasses, Vision Pro (experimental), Android XR (preview), PC VR.
Your code
GraspableOrdinary code on your disk: React, three.js, React Three Fiber, @react-three/xr. Yours, in any editor, with a version per run.
Unreal EngineA project on your disk and engine source for licensees.
Price
GraspableFree to build with on your computer, on every plan. Builder $20, Pro $40, Studio $99 per seat add Cloud Agents, Fast mode, premium templates, teams and Credits (graspable.dev/pricing).
Unreal EngineFree under $1M revenue, then a 5% royalty above $1M lifetime gross per product; a per-seat licence for non-game commercial use by companies over $1M (unrealengine.com/license).
Native headset apps
GraspableWeb only today: no Unity, Unreal or native headset builds.
Unreal EngineThe point of Unreal.

Where Unreal Engine is the better choice

  • Rendering, MetaHuman and the Fab library.
  • Full source and a free start under $1M.
  • Native builds for every major headset.

Where Graspable is

  • A scene from a sentence in minutes; nothing to compile and nothing to install on the headset.
  • An agent that builds, checks and repairs, with your own AI account.
  • A web project you can host anywhere or publish from the app.

Our take

Unreal is for the top of the rendering range and for teams already in it. For a headset experience from a description, Graspable is the faster and lighter path, and the result opens from a link.

Graspable is our product. The facts above are what we found; this paragraph is what we think.

Try Graspable

It is a desktop app, free with your own AI account. Describe a scene, watch it being built as a real project on your computer, and open it on your headset. See what people made and the requests behind each.

Download GraspablePricing

Sources

Last checked 3 October 2026. Product names belong to their owners; none of them endorses Graspable.

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