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Godot Engine vs Unity AR Foundation

Godot Engine logo

Godot Engine

Game Development

Free and open-source 2D and 3D game engine

From
Free
Rated
-
Full reviewWebsite
Unity AR Foundation logo

Unity AR Foundation

AR/VR & Metaverse

Unified AR development framework for Unity

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Godot Engine no royalties or licensing fees, but requires self-hosting and maintenance of the engine builds; Unity AR Foundation requires platform-specific plugins (ARCore, ARKit) to actually implement AR features
  • They diverge on capability: Godot Engine covers Scene system, Unity AR Foundation covers Plane detection.

Where they differ

Only the attributes on which Godot Engine and Unity AR Foundation actually diverge.

Attributes where Godot Engine and Unity AR Foundation differ
AttributeGodot EngineUnity AR Foundation
Pricing modelopen-sourceUnknown
PlatformsLinux, macOS, Windows, Android, iOS, Web, ConsolesiOS, Android, visionOS, HoloLens 2, Meta Quest, Unity Editor
CategoryGame DevelopmentAR/VR & Metaverse
Founded20072004

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

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 Godot Engine

  • Scene system
  • GDScript language
  • Visual shader editor
  • 2D and 3D rendering
  • Physics engine
  • Built-in animation tools
  • Debugging tools
  • Asset library

Only in Unity AR Foundation

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

What people use each for

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

Godot Engine

  • 2D game developmentnot Unity AR Foundation
  • 3D game developmentnot Unity AR Foundation
  • Cross-platform game deploymentnot Unity AR Foundation
  • VFX and simulation projectsnot Unity AR Foundation

Unity AR Foundation

  • VR Gamingnot Godot Engine
  • AR Marketingnot Godot Engine
  • Virtual Trainingnot Godot Engine
  • 3D Visualizationnot Godot Engine
  • Immersive Experiencesnot Godot Engine

Where each one falls short

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

Godot Engine

  • No royalties or licensing fees, but requires self-hosting and maintenance of the engine builds
  • Console export support exists but requires additional SDK setup and licensing with each console manufacturer separately

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

Pricing, plan by plan

Godot Engine

Free

No published plan breakdown. See the Godot Engine review.

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

Which should you pick?

Choose Godot Engine if

  • You need scene system.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Android, iOS, Web, Consoles.
  • You also want gdscript language.
Godot Engine review

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

Questions people ask

Is Godot Engine or Unity AR Foundation better?
Neither clearly leads. Godot Engine starts at Free and Unity AR Foundation at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Godot Engine or Unity AR Foundation?
Godot Engine starts at Free and Unity AR Foundation at Free.
Does Godot Engine or Unity AR Foundation run on more platforms?
Godot Engine runs on Linux, macOS, Windows, Android, iOS, Web, Consoles. Unity AR Foundation runs on iOS, Android, visionOS, HoloLens 2, Meta Quest, Unity Editor.
Can I use Godot Engine for free?
Both have a free tier, so you can try either at no cost before committing.
What is Godot Engine best used for?
Godot Engine is most often used for 2d game development, 3d game development, cross-platform game deployment, vfx and simulation projects. Of those, 2d game development and 3d game development are not what Unity AR Foundation is typically brought in for.
What can Godot Engine do that Unity AR Foundation cannot?
Godot Engine covers Scene system, GDScript language, Visual shader editor, 2D and 3D rendering. Unity AR Foundation covers Plane detection, Image tracking, Face tracking, Point clouds.

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
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
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
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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