David Shim sold his first startup for $200M, but when he started Read AI in 2021, he built something that failed spectacularly — 5% retention after 30 days. Instead of pivoting to chase revenue, he focused obsessively on fixing one metric: day-one ROI. Today, Read AI generates 8-figures in ARR, adds a million accounts monthly, and spends virtually nothing on marketing. David discovered that in the age of AI, the companies that win aren't the ones with the biggest models — they're the ones that solve real problems instantly. You'll learn: How David validated his idea by calling Zoom's founder directly and getting instant clarity Why focusing on day-one ROI instead of revenue led to 81% retention How to build viral loops that drive 1M+ monthly signups without marketing spend Why giving away your product for free can be your best growth strategy How to compete when Microsoft, Google, and Zoom enter your market Full show notes → saasclub.io/458 This episode is brought to you by: 💖 ⁠⁠Sprinto⁠⁠ → ⁠⁠Learn more and book a demo today 🚀 SaaS Club Launch → Build your SaaS to $10K MRR Get weekly SaaS lessons and new founder stories → saasclub.io/email