Apple introduces Live Components API for iOS and macOS to power adaptive UI

Design · 5 min read

At WWDC 2026 Apple announced the Live Components API, a cross-platform framework for building UI primitives that can update themselves in response to system, network, or user-driven state changes. Unlike existing native controls, Live Components are designed to be composable, versioned, and synchronizable across a user's Apple ID, enabling a single component to retain state as users move between devices.

The API integrates tightly with Swift Concurrency and a new declarative lifecycle model Apple calls Continuity States, which let components declare how they should behave when backgrounded, presented in widgets, or streamed to CarPlay and Vision Pro. Apple emphasized privacy — default telemetry is limited and state sync is encrypted end-to-end by the user's iCloud account.

Developers can prototype Live Components inside Xcode's revamped Canvas, which now supports multi-device previews and simulated network conditions. Early reaction from the design community: Live Components could significantly reduce duplication when creating responsive components, but teams will need to rethink state boundaries and test across continuity scenarios to avoid unexpected sync conflicts.