How Alex Finn built a $300K app with Cursor | Starter Story

Alex Finn built a $100,000 app in 15 minutes on launch day without writing a single line of code. He used Cursor, an AI coding tool, to generate every line of code for his app, and he launched it in three months. The app now makes $300,000. On Starter Story, Finn walked through his entire playbook: how to find an idea worth building, how to use AI coding tools effectively, and how to execute a launch that generates immediate revenue.

Finding the right idea: Solve your own problem

Finn did not start by asking what AI could build. He started by identifying a painful, recurring problem in his own life. He was working as a freelance designer and struggling with client feedback. Clients would send vague, contradictory comments on design files, and Finn would spend hours interpreting them. "I was the one who had to figure out what they meant," he said. The problem was not that he lacked design skills; it was that the feedback loop was broken.

He built a tool called Feedback, which lets clients leave time-stamped, screen-recorded feedback directly on a design file. The app processes that feedback with AI, extracts actionable tasks, and prioritizes them. "I wasn't trying to build a billion-dollar company," Finn said. "I was trying to stop being frustrated every day." The lesson: the best ideas often come from your own daily friction, not from market research or trend analysis.