Any Flutter developer knows how great this SDK is at creating beautiful, performant and portable apps. Usually, we do not want just to create an app - we want to build THE product. We want to create something that will be used by our users every day, something that will bring them joy and make their life easier. Thus, it's crucial to keep a finger on the pulse of the users' behaviour, understand their struggles and needs, and later make observation-based decisions to improve our products. In this talk, I will share some real-world tips and tricks used in developing THE products with Flutter.