SwiftUI
SwiftUI is a declarative UI framework developed by Apple for building user interfaces across all Apple platforms, including iOS, macOS, watchOS, and tvOS. It uses Swift code to define UI components and their behavior, enabling developers to create responsive and dynamic apps with less code compared to imperative frameworks like UIKit. SwiftUI integrates tightly with Xcode, providing live previews and real-time feedback during development.
Developers should learn SwiftUI when building modern Apple applications, as it is the recommended framework for new projects due to its declarative syntax, cross-platform compatibility, and seamless integration with Swift. It is particularly useful for creating adaptive UIs that work across different device sizes and orientations, and for projects requiring rapid prototyping or iterative design changes, thanks to its live preview feature in Xcode.