Flutter Tutorial: building a Flutter chat app

This is a summary of the text about building a real-time chat application using Flutter and Supabase. The application allows users to sign up, send messages, and receive messages in real time. It uses Supabase as the backend database to store user profiles and messages. The application also includes features such as authentication, authorization, and error handling. The code is written in Dart and utilizes various libraries and packages, including Flutter, Supabase, and Supabase Flutter SDK. The application can be run on multiple platforms, including iOS, Android, and the web.