About this episode Subscribe: In this week’s Built to Sell Radio episode, John Warrillow interviews David Sinkinson, co-founder of AppArmor. David and his brother Chris created a mobile app that allows students to alert campus security by pressing a single button on their phones. Their journey from developing AppArmor to selling their company for $40 million is packed with insight. During the interview, you’ll discover how answering a simple question posed by an acquirer almost cost the Sinkinso...