Build, integrate, audit, or upgrade Stream Chat, Video, and Feeds in React Native CLI and Expo / Expo Router apps, and answer RN / Expo how-to questions about them. Scaffold a new app, add Stream to an existing project, review an integration, upgrade an SDK major, migrate from Sendbird (@sendbird/chat, @sendbird/uikit-react-native), or build an AI assistant / ChatGPT-style app on the Chat SDK's ai-components (replacing the deprecated @stream-io/chat-react-native-ai), or one on Stream Agents. Covers channel lists, messages, MessageComposer, threads, the attachment picker, audio messages, offline support, push notifications, video calls, CallContent and ParticipantView, ringing, livestreams, audio rooms, StreamFeeds activity / timeline / notification feeds, comments, reactions, follows, and theming or matching a design, with stream-chat-react-native, stream-chat-expo, @stream-io/video-react-native-sdk, and @stream-io/feeds-react-native-sdk. React Native and Expo only - web React uses stream-react.