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ARKit vs Three.js

ARKit logo

ARKit

Software

Apple's framework for iOS AR development

From
Free
Rated
-
Full reviewWebsite
Three.js logo

Three.js

Software

JavaScript 3D library for WebGL and WebXR

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ARKit iOS-only platform, not available for Android or other operating systems; Three.js forward rendering pipeline only, no deferred rendering support
  • They diverge on capability: ARKit covers World tracking, Three.js covers WebGL rendering.

Where they differ

Only the attributes on which ARKit and Three.js actually diverge.

Attributes where ARKit and Three.js differ
AttributeARKitThree.js
PlatformsiOS, iPadOS, macOS, visionOSWeb, macOS, Windows, Linux, iOS, Android
Founded19762010

Identical on both: starting price (Free), pricing model (free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ARKit

  • World tracking
  • Face tracking
  • Body tracking
  • LiDAR support
  • RealityKit
  • Reality Composer
  • SceneKit
  • Ar support

Only in Three.js

  • WebGL rendering
  • Scene graph
  • Materials system
  • Animation system
  • WebXR
  • Post-processing
  • Physics
  • Loaders

What people use each for

The jobs each tool is most often brought in to do.

ARKit

  • VR Gaming
  • AR Marketing
  • Virtual Training
  • 3D Visualization
  • Immersive Experiences

Three.js

  • VR Gaming
  • AR Marketing
  • Virtual Training
  • 3D Visualization
  • Immersive Experiences

Both are used for vr gaming, ar marketing, virtual training, 3d visualization, immersive experiences, on those jobs the choice comes down to price and fit rather than capability.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ARKit

  • iOS-only platform, not available for Android or other operating systems
  • Location-based AR accuracy limited to 3-5 meters, insufficient for precise applications
  • Cannot handle very fast motion capture
  • Accuracy varies with lighting conditions and surface characteristics
  • Requires iOS 11 or later and specific device hardware

Three.js

  • Forward rendering pipeline only, no deferred rendering support
  • No built-in collision detection or spatial indexing, requiring external physics libraries
  • WebGL dependency means no support for non-WebGL environments

Pricing, plan by plan

ARKit

Free
  • FreeFree
    • Full SDK
    • Documentation
    • Sample code

Three.js

Free
  • FreeFree
    • Full library
    • WebXR module
    • Examples

Which should you pick?

Choose ARKit if

  • You need world tracking.
  • You want to start without paying.
  • You work on iOS, iPadOS, macOS, visionOS.
  • You also want face tracking.
ARKit review

Choose Three.js if

  • You need webgl rendering.
  • You want to start without paying.
  • You work on Web, macOS, Windows, Linux, iOS, Android.
  • You also want scene graph.
Three.js review

Questions people ask

Is ARKit or Three.js better?
Neither clearly leads. ARKit starts at Free and Three.js at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ARKit or Three.js?
ARKit starts at Free and Three.js at Free.
Does ARKit or Three.js run on more platforms?
ARKit runs on iOS, iPadOS, macOS, visionOS. Three.js runs on Web, macOS, Windows, Linux, iOS, Android.
Can I use ARKit for free?
Both have a free tier, so you can try either at no cost before committing.
What is ARKit best used for?
ARKit is most often used for vr gaming, ar marketing, virtual training, 3d visualization.
What can ARKit do that Three.js cannot?
ARKit covers World tracking, Face tracking, Body tracking, LiDAR support. Three.js covers WebGL rendering, Scene graph, Materials system, Animation system.

Answered from the vendors’ own pages

ARKit: Is ARKit free to use?

Yes, ARKit is free to use. It is included in Apple's iOS SDK and requires only Xcode and a Mac to start building AR apps. There are no licensing fees or subscription costs.

Source
Three.js: Is Three.js free to use?

Yes. Three.js is released under the MIT license, an open-source license that permits unlimited commercial and personal use with no licensing fees.

Source
ARKit: What iOS devices support ARKit?

ARKit is supported on iPhone 6s and later, iPad Pro models, and the latest iPad models. It requires iOS 11 or later. Apple Vision Pro also supports ARKit with enhanced capabilities through visionOS.

Source
Three.js: Does Three.js include physics simulation?

No. Three.js is a rendering library only. Physics, collision detection, and spatial indexing must be implemented with external libraries like Rapier, Ammo, or JoltPhysics.

Source
ARKit: Can ARKit work offline?

ARKit can function offline for tracking and scene understanding since these operations run locally on the device. However, multiplayer AR features and cloud-based object detection require internet connectivity.

Source
Three.js: Can I use Three.js for offline development?

Yes. Local development requires a local web server for CORS compliance. You can use npm with a build tool like Vite, or run a local Python server for development.

Source
ARKit: Does ARKit integrate with game engines?

Yes, ARKit integrates with Unity through the Unity ARKit Plugin and with Unreal Engine. Developers can also use it with Metal, SceneKit, and Apple's RealityKit framework.

Source
Three.js: Does Three.js support WebXR for VR/AR?

Yes. Three.js documentation includes WebXR APIs for building VR and AR experiences in web browsers.

Source
ARKit: What are ARKit's limitations with location-based AR?

ARKit's location-based positioning has accuracy limitations. Image-based positioning is primarily useful in urban areas, and beacon-based navigation provides accuracy of 3-5 meters, which is insufficient for precise AR applications requiring 1-meter accuracy or better.

Source
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