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Starter Story

From Zero to $42K/Month in 90 Days with AI | Starter Story

September 29, 2025

AI Summary

5 min read

🎙️ The Voices & The Context

  • The Format: This is a casual, high-energy interview between Pat Walls (host of Starter Story) and CJ Z., a successful founder who went from zero to $42k/month in just 90 days.
  • The Key Players:
    • Pat Walls: The host, a seasoned entrepreneur and storyteller who runs Starter Story, a platform for founder case studies. He’s the curious, encouraging interviewer.
    • CJ Z. (Sajila Mazafir): The guest, a self-taught AI builder who moved to Canada in 2018, failed at 11 startups, and then hit a massive success with Code Guide. He’s humble, methodical, and obsessed with AI.
  • The Vibe: Inspiring, Educational, and Fast-Paced. It feels like a masterclass in modern AI entrepreneurship, mixed with a genuine "overnight success after years of grinding" story.

🗝️ Key Themes & Topics

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What you'll learn

  • 1 (00:00) **🎙️ Introduction: CJ Z (Sajila Mazafir)**
  • 2 (01:36) **The Core Problem: AI Hallucinations**
  • 3 (03:00) **Why AI Coding is a Big Opportunity**
  • 4 (03:48) **CJ's Backstory: From 9-to-5 to Building**
  • 5 (05:07) **Finding and Validating the Idea**
  • 6 (06:57) **Building the Product: From Idea to Launch**
  • 7 (10:27) **Marketing Strategy: Tutorial Marketing**

+ Full timestamped outline available in the app

Show Notes

From Zero to $42K/Month in 90 Days with AI

This is how CJ Zafir built an AI tool to $42,000 MRR in just 90 days.

🛠️ Want to start building with AI? Check out Starter Story Build → https://build.starterstory.com?utm_source=youtube&utm_campaign=cj

Follow CJ's Journey: https://x.com/cjzafir

🔔 Follow the Second Channel: ‪@StarterStoryBuild‬ 🏁 We're hiring: starterstory.com/jobs

Chapters: 0:00 - Intro 1:35 - CJ's story 2:12 - What issue does CodeGuide solve 3:00 - The opportunity in AI apps 3:47 - CJ's backstory 5:05 - How to find a successful idea 5:51 - How to validate an idea 7:17 - How to build a product 8:32 - The best way to build with AI 10:24 - CJ's marketing strategy 12:09 - Converting users into paying customers 12:40 - CJ's business model & pricing 13:27 - CJ's tech stack 14:59 - Day in the life of CJ 15:53 - CJ's experience with Starter Story 16:55 - CJ's advice to entrepreneurs 18:01 - Outro

Sharing ideas that make money!

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---- Keywords: mobile app success, business ideas, revenue stories, micro saas

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