Learn how we built a design system in our apps with Flutter: key strategies, best practices, and real-world examples to create a cohesive design language, mainly using our own open-source solution. Perfect for both seasoned developers and beginners. In this talk we'll go through the main concepts of a Design System, then we'll understand how Flutter handles that with Material and, lastly, we'll learn how to implement an easy library to help us maximize our efficiency with themes, including rebrandings and dark mode.