AR Furniture App is built on a modern augmented reality technology stack that delivers realism, accuracy, and cross-platform performance. Unity serves as the core development engine, enabling high-quality 3D rendering, smooth interactions, and efficient deployment across both iOS and Android. The app uses ARKit on iOS and ARCore on Android to handle real-world tracking, surface detection, and spatial mapping, allowing virtual furniture to be placed accurately on floors, tables, and other surfaces. These frameworks support plane detection, light estimation, and environment understanding, ensuring that furniture models remain stable and properly scaled as users move around their space.