In this tutorial, we built a real-time chat application using Strapi as our backend server and React Native for the mobile app frontend. We covered setting up authentication in Strapi, creating a collection to store messages, and implementing socket.io with the help of the strapi-plugin-io to enable real-time communication between users. Finally, we built out the chatting application using React Native. The final product is a simple chat app that allows users to send and receive messages in real time.