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Unity AR Foundation vs WebXR Device API

Unity AR Foundation logo

Unity AR Foundation

Software

Unified AR development framework for Unity

From
Free
Rated
-
Full reviewWebsite
WebXR Device API logo

WebXR Device API

Software

W3C standard for VR and AR on the web

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Unity AR Foundation requires platform-specific plugins (ARCore, ARKit) to actually implement AR features; WebXR Device API safari on iOS does not support WebXR natively, limiting reach for iPhone and iPad users
  • They diverge on capability: Unity AR Foundation covers Plane detection, WebXR Device API covers VR sessions.

Where they differ

Only the attributes on which Unity AR Foundation and WebXR Device API actually diverge.

Attributes where Unity AR Foundation and WebXR Device API differ
AttributeUnity AR FoundationWebXR Device API
Pricing modelUnknownfree
PlatformsiOS, Android, visionOS, HoloLens 2, Meta Quest, Unity EditorWeb, Chrome, Firefox, Edge, Samsung Internet
Founded20041994

Identical on both: starting price (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 Unity AR Foundation

  • Plane detection
  • Image tracking
  • Face tracking
  • Point clouds
  • ARKit
  • ARCore
  • OpenXR
  • Magic Leap

Only in WebXR Device API

  • VR sessions
  • AR sessions
  • Input handling
  • Reference spaces
  • Chrome
  • Firefox
  • Edge
  • Quest Browser

Both cover

  • Ar support

What people use each for

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

Unity AR Foundation

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

WebXR Device API

  • 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.

Unity AR Foundation

  • Requires platform-specific plugins (ARCore, ARKit) to actually implement AR features
  • Performance varies significantly by device, with battery drain and heat generation on mobile
  • Emulators cannot accurately test AR experiences due to missing camera and sensor data
  • No WebXR support for browser-based AR experiences
  • Occlusion features show lower performance at 25-40 FPS compared to other features at 40-60 FPS
  • Limited access to latest platform-specific features compared to native ARKit or ARCore

WebXR Device API

  • Safari on iOS does not support WebXR natively, limiting reach for iPhone and iPad users
  • Requires compatible VR/AR hardware which limits adoption to users with VR headsets or AR-capable mobile devices
  • Browser support still emerging with some features being experimental or not widely implemented across all browsers

Pricing, plan by plan

Unity AR Foundation

Free
  • Included with Unity PersonalFree
    • Free for individuals and small teams with under $200K revenue/funding
    • AR Foundation package included
    • Access to all core AR features
  • Included with Unity Pro$185/month
    • Professional tier licensing
    • AR Foundation package included
    • All core AR features plus Pro-level support

WebXR Device API

Free
  • FreeFree
    • Open standard
    • Browser support
    • Specification

Which should you pick?

Choose Unity AR Foundation if

  • You need plane detection.
  • You want to start without paying.
  • You work on iOS, Android, visionOS, HoloLens 2, Meta Quest, Unity Editor.
  • You also want image tracking.
Unity AR Foundation review

Choose WebXR Device API if

  • You need vr sessions.
  • You want to start without paying.
  • You work on Web, Chrome, Firefox, Edge, Samsung Internet.
  • You also want ar sessions.
WebXR Device API review

Questions people ask

Is Unity AR Foundation or WebXR Device API better?
Neither clearly leads. Unity AR Foundation starts at Free and WebXR Device API at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Unity AR Foundation or WebXR Device API?
Unity AR Foundation starts at Free and WebXR Device API at Free.
Does Unity AR Foundation or WebXR Device API run on more platforms?
Unity AR Foundation runs on iOS, Android, visionOS, HoloLens 2, Meta Quest, Unity Editor. WebXR Device API runs on Web, Chrome, Firefox, Edge, Samsung Internet.
Can I use Unity AR Foundation for free?
Both have a free tier, so you can try either at no cost before committing.
What is Unity AR Foundation best used for?
Unity AR Foundation is most often used for vr gaming, ar marketing, virtual training, 3d visualization.
What can Unity AR Foundation do that WebXR Device API cannot?
Unity AR Foundation covers Plane detection, Image tracking, Face tracking, Point clouds. WebXR Device API covers VR sessions, AR sessions, Input handling, Reference spaces. Both handle Ar support.

Answered from the vendors’ own pages

Unity AR Foundation: Is Unity AR Foundation free?

Yes, AR Foundation is free and included with Unity. It is a package within the Unity engine, though you need a Unity license (available free for personal use with under $200K revenue).

Source
WebXR Device API: What is WebXR Device API?

WebXR Device API is a W3C web standard that enables developers to build immersive virtual reality (VR), augmented reality (AR), and mixed reality experiences directly within web browsers without requiring native app installation.

Source
Unity AR Foundation: What platforms does AR Foundation support?

AR Foundation supports iOS (via ARKit), Android (via ARCore), visionOS, HoloLens 2 (via OpenXR), and Meta Quest (via OpenXR). Testing in the Unity Editor is available through XR Simulation.

Source
WebXR Device API: Which browsers support WebXR?

WebXR is supported in Chrome (desktop and mobile), Microsoft Edge (desktop), Firefox (desktop and mobile), and Safari on mobile. Safari on iOS does not implement WebXR natively but third-party apps like 8th Wall provide workarounds.

Source
Unity AR Foundation: Do I need additional plugins to use AR Foundation?

Yes. AR Foundation is an abstraction layer and requires platform-specific plugins: ARCore XR Plugin for Android and ARKit XR Plugin for iOS. These plugins implement actual AR features using native SDKs.

Source
WebXR Device API: Is WebXR hardware-dependent?

Yes, WebXR requires compatible VR/AR hardware such as Meta Quest headsets, HTC Vive, Microsoft HoloLens, or mobile AR-capable devices, but the same code can run on different hardware through the unified API.

Source
Unity AR Foundation: Can I test AR experiences in the Unity Editor?

AR Foundation supports XR Simulation in the Editor for early testing, but accurate AR testing requires real devices because emulators cannot replicate camera and sensor data accurately.

Source
Unity AR Foundation: Does AR Foundation support web-based AR?

No, AR Foundation does not support WebXR. Unity has stated there are no current plans to add WebXR support to AR Foundation. Web AR requires alternative solutions like 8th Wall.

Source
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