SwiftUI is a declarative framework for building user interfaces across all Apple platforms. It provides a modern and intuitive way to create UIs using Swift code. With SwiftUI, you can easily build interactive and responsive apps that adapt to different screen sizes and orientations. Some key features of SwiftUI include: - Declarative syntax: Instead of modifying views directly, you describe the desired UI state and let SwiftUI handle the updates. - Dynamic layouts: SwiftUI automatically adapts your UI to different device sizes, orientations, and accessibility settings. - Live previews: See the changes you make to your code in real time, without having to rebuild the entire app. - Xcode integration: SwiftUI is tightly integrated with Xcode, providing features like code completion, debugging, and visual editing tools.