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$3,000 in a Month From an App Two Dads Built in Their Spare Time

  • Philip Sergelius

  • Micro-Learning App Co-Founder
  • $3,000 revenue in one month

πŸ“ Philip Sergelius writes…

We were both spending half an hour a day scrolling feeds that left us with nothing, and we wanted that time back.

He and co-founder Max are physicists with semiconductor day jobs, two kids each. NerdSip got built in early mornings and after bedtime.

Type in any topic, get a short, AI-generated course with quizzes.

Started coding in December, launched in March. By July: 10,000 downloads, 100+ paying subscribers, $3,000 revenue that month πŸ€‘

The part worth stealing is how they got users πŸ‘‡

SEO drives over 40% of new users, all flowing through our blog… which has become the backbone of the whole operation.

AI search is second at 28%, meaning ChatGPT and Google’s AI answers citing us. Everything else is noise.

Their blog is past 250 posts 🀯, aimed at questions like “how to never run out of things to say”. Backlinks came from cheap directory listings. Their $500 of ads never beat the free stuff.

Meanwhile SaaS SEO agencies charge $3,000–$5,000 a month for a couple of posts and some technical work.

Plenty of people are vibe-coding apps with no clue how to get users. With NerdSip’s SEO strategy and AI drafting the posts, you could run this as a profitable service for those app creators πŸ”₯

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Updated: September 4, 2026

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