About this tool

Catalog - UI is a reference app for native iOS developers who want to see how UI components look and behave before they build them. It includes controls such as buttons, menus, segmented controls, sliders, switches, and text fields, along with pickers, views, alerts, and toolbars. Tap any component to open a live demo, then view and copy the code snippet into your own project. You can filter by tag, search the full catalogue, and save favorites or revisit recently viewed items. Parallel SwiftUI demos sit beside the UIKit examples for the key components.