The document discusses aligning user acquisition and retention efforts to improve mobile app growth. It argues that acquisition and retention teams often work in silos when they should collaborate to provide a consistent user experience. A case study is presented of a TV and movie streaming app where an audit of retention rates found they varied significantly depending on the advertising creative used. Testing different onboarding messages tailored to each acquisition source helped validate hypotheses and improve day one retention rates. In summary, breaking down silos between teams and aligning product and marketing efforts across the entire user journey can increase product-market fit and compound user retention.