The New Relic user flows app is a tool that helps businesses understand their users' journeys and experiences by analyzing every action and page visited on their website. By consolidating user flow details and performance impacts into one screen, it provides insights to product and engineering teams to spend resources on the right set of features, improve user adoption, and drive business outcomes. The app is designed for single-page application architecture and requires specific setup and configuration before use. It offers various features such as flow analysis, funnel conversion, and stepwise performance tracking, enabling businesses to make data-driven decisions to enhance user satisfaction and achieve their objectives.