Nico Giraldo, founder of 21Moves, a hugely successful puzzle app, shares his fascinating journey from medical school to 10 million downloads and $25K MRR. He offers actionable strategies on crafting standout user experiences, emphasizing the importance of user testing and onboarding. Nico delves into the nuances of app monetization, shifting from ads to subscriptions, while revealing how community feedback shapes product success. His insights on optimizing user retention through humor and effective notifications make for an engaging listen for aspiring app developers.