What is the difference between UIKit and AppKit?
The question is about UIKit
The difference between UIKit and AppKit lies in their platform specialization and design. UIKit has been designed specifically for iOS, iPadOS, and watchOS; it provides the capabilities for building responsive, touch-based interfaces across mobile devices. It includes a number of elements like buttons and sliders with touch gesture support, optimally prepared for smaller screens and touch interactions.
AppKit is designed for macOS. It holds the collection of UI elements and widgets that are suitable for desktop applications. It covers menus, window management, and mouse-based interaction able to meet the requirements of a Macintosh desktop. While UIKit focuses on the needs of mobile devices, AppKit concerns itself with the requirements of desktops, supporting another set of UI components and user interactions.