“Built the app in 3 days. Spent 3 years trying to convince people it exists.” That line hurts because I’ve lived a version of it. A few years ago, I built a small app that solved a problem I genuinely had. I spent nights fixing bugs, changing buttons, improving the onboarding, and obsessing over tiny details. When it finally worked, I showed it to a friend. “This is actually pretty useful,” he said. That was all the validation I needed. I launched it. Then… nothing. Day one: 11 v...