Build for watchOS
Bring the best of your app to the wrist. Take advantage of health and fitness APIs, widgets in the Smart Stack, and Live Activities. And find out how the new design elevates the content people care about most — right when they need it.

Get to know watchOS
New design language
Say hello to Liquid Glass
SwiftUI
APIs for system materials, tab views, split views, and more

Health and fitness
Real-time heart rate, route map, and accelerometer data

Widgets in the Smart Stack
Timely, relevant information at just the right moment
Complications on the watch face
Quick access to your watchOS app

Device connectivity
Fast and easy Bluetooth connections
Interactive notifications
Communication at a glance



