Introduction!

User authentication is one of the first features developers need when building a modern mobile application. Whether you’re creating a social platform, an e-commerce app, or a simple personal project, having a secure login and signup system is essential. That’s where Firebase Authentication steps in—it offers fast, reliable, and developer-friendly tools to handle user accounts without the hassle of writing server-side code.

In this guide, we’ll walk through the entire process of building a complete authentication system in Flutter. From setting up Firebase using the CLI to designing clean UI screens for login, signup, and password recovery, you’ll learn how to bring everything together into a fully functional experience. We’ll also implement a simple dashboard and enable logout functionality, giving you a complete, real-world authentication flow that you can immediately use or adapt for your own projects.

Before we dive into the UI and logic, we begin with a quick overview of Firebase and how it helps streamline mobile app development.