He turned a simple idea into a $15K MRR mobile app | Starter Story

Sebastian Row quit his job with no plan, no idea, and exactly 12 months of runway. He just wanted to build apps. Six months in, he had fewer than a dozen downloads. Then he changed his strategy, found an idea that worked, and within two years was making $15,000 a month as a solo developer with over 300,000 downloads on the App Store.

The false start: building without a market

When Sebastian quit, he had no specific idea. He just wanted to build apps. So he started building things he thought were cool. The first was a weather app with a twist — it would tell you whether you needed an umbrella. He thought it was clever. Nobody downloaded it. Then he built a few more projects. None gained traction.

The problem was straightforward: he was building what he wanted to build, not what anyone wanted to use. "I was just building things I thought were interesting," he says. "I wasn't thinking about whether anyone would actually pay for them." He had no audience, no distribution strategy, and no mechanism for understanding what users actually needed. He was six months into his 12-month runway with almost nothing to show for it.

The pivot: finding a real problem