Daily's iOS Starter Kit is a resource designed to help developers build video conferencing apps using Daily’s Client SDK for iOS and SwiftUI, without relying on third-party libraries. The kit demonstrates the integration of video call functionalities such as joining and leaving calls, toggling the microphone and camera, and managing participant views through a declarative UI framework. Core components include the CallManager class for UI state management and the CallClient class for call operations. The app uses SwiftUI's state-driven approach to ensure synchronization between the UI and app state, transitioning between various layouts based on call participation. The grid layout dynamically adjusts to participant numbers, highlighting active speakers and screen sharing. By leveraging test doubles like FakeCallManager, developers can iterate on the UI without network dependencies. This starter kit serves as a foundation for building production-ready apps, with ongoing updates and community support available through Daily's resources.