UIKit gives iOS applications a common set of visual components and interaction behaviors. An interface normally combines containers that establish screen structure, views that present the application's information, and controls that accept input or communicate state. Standard components inherit familiar platform behavior, including accessibility support and adaptation to different screen conditions. Developers can customize their appearance and composition without rebuilding fundamental interactions such as touch handling, text entry, scrolling, or focus management. UIKit can also be combined with specialized frameworks when an application needs capabilities such as payments, health data, or document services.