Six months ago I launched CostLoop, a SaaS subscription tracker for small businesses. Last week I got interviewed by SaaS Hive about why I built it, what I got wrong, and what I’ve learned as a solo founder. The biggest lesson wasn’t technical. I spent weeks polishing UI and features. Users didn’t care. They just wanted to answer one question: “What are we actually paying for?” That completely changed how I think about product development. If you’re building a SaaS, the interview m...