You can use the Apollo Client library to implement GraphQL in a React Native app. 'Apollo Client' provides tools for making GraphQL queries, mutations, and subscriptions, while managing data caching and state management. You define the GraphQL operations, fetch data from a GraphQL server, and update your app's UI based on the responses. 'Apollo Client' simplifies data management and synchronization, enabling efficient communication with a GraphQL backend and enhancing the app's performance and responsiveness.