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How I built a $30K/month mobile app | Starter Story

August 29, 2026

AI Summary

5 min read

John McAvoy, a self-taught developer from Scotland, built a mobile app that has been downloaded over five million times and generates roughly $30,000 per month in revenue. He did it alone, with no outside funding, no marketing budget, and no team. The app itself is not a flashy social platform or a viral game — it is a utility that solved a specific, personal problem. The story of how he found the idea, built the product, and grew it to millions of users without spending a dime on advertising is a masterclass in disciplined, user-focused product development.

The Origin: Solving a Real, Personal Problem

McAvoy did not set out to build a business. He had a problem: he needed a simple, reliable way to track something in his daily life, and the existing solutions were either too complicated, too expensive, or simply didn't exist. So he taught himself to code and built exactly what he needed.

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What you'll learn

  • 1 (01:30) **Introduction: The Solo Founder Behind 5 Million Downloads** - Host Pat Walls introduces John McAvoy, a self-taught Scottish coder who built a $30K/month app with 5 million downloads using a free strategy.
  • 2 (02:18) **The Core Strategy: App Store Optimization (ASO) as a Free Growth Engine** - John reveals that his primary, zero-cost growth tactic was optimizing for the App Store search results.
  • 3 (03:33) **Back to School Distractions & The Real Start** - The transcript contains several minutes of unrelated advertisements before returning to the main interview content.
  • 4 (04:47) **Deep Dive into the App's Business Model** - John explains the mechanics of how his free app generates $30,000 per month in revenue.
  • 5 (05:30) **Finding the Right App Idea: Solving a Personal Pain Point** - John discusses his philosophy for choosing which app to build, emphasizing necessity over novelty.
  • 6 (06:15) **The Technical Journey: Teaching Himself to Code** - John shares the story of learning to code from scratch to build a professional-grade mobile app.
  • 7 (07:00) **Why He Chose iOS First** - John explains his strategic decision to launch exclusively on the Apple App Store before considering Android.

+ Full timestamped outline available in the app

Guests on this episode

Show Notes

How I built a $30K/month mobile appSharing ideas that make money!--- ------How I built a $30K/month mobile appSharing ideas that make money! --------- Keywords: app development, startup stories, app monetization, startup success, startup journey, tech entrepreneur, revenue stories

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