RealityKit

Create augmented reality and 3D experiences on iOS using RealityKit for rendering and ARKit for world tracking and scene understanding. Targets Swift 6.3 / iOS 26+.

Contents

• Capabilities and Permissions
• RealityView and Architecture
• Raycasting vs Entity Hit Testing
• Entity-Component-System (ECS)
• Route by Task
• Common Mistakes
• Review Checklist
• References

Capabilities and Permissions

Add NSCameraUsageDescription to Info.plist. Add arkit to UIRequiredDeviceCapabilities only if AR is an absolute requirement for the app; otherwise, check ARWorldTrackingConfiguration.isSupported at runtime and provide a 3D fallback (content.camera = .virtual).