Have you ever experienced a situation where you receive customer feedback, and the reported app behavior is completely different from what you observe? Or wondered why the conversion rate has dropped in the past month, even though no major product changes were made? In this talk, we’ll dive deeper into how to gather the right data to find answers to such questions. We'll start with how to approach the effective implementation of RUM (Real User Monitoring) in your app, followed by exemplary metric optimization methods. We’ll demonstrate how this data can drive informed product decisions, ensuring applications are tailored to user needs and remain competitive in the marketplace.