Progressive Web Apps are web applications that have been designed, so they are capable, reliable, and installable. These three pillars transform them into an experience that feels like a platform-specific application. The central core components that ensure that PWA works flawlessly are Service Workers. These components are a network proxy that takes control of a network request from the application and adds cache capabilities, background app sync, push notifications, and offline features. In this talk, I will review the PWA capabilities in Flutter and show you how you can extend these functionalities to have a better progressive web app building with Flutter in order to boost user experience in your application