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The $100 MBA

Can You Build A Profitable SaaS In 7 Days With Just AI? My Experiment With Proof!

15 min episode · 2 min read
·
Chris Ashby

Episode

15 min

Read time

2 min

Topics

Productivity, Startups, Sales & Revenue

AI-Generated Summary

Key Takeaways

  • AI-assisted development speed: Tasks requiring a professional developer one month to complete can be accomplished in 3–4 hours using AI coding tools like Leap or Windsurf. Treat AI as a skilled developer by providing precise, detailed instructions rather than vague prompts.
  • Sunk cost discipline: When an AI tool (Leap) produced unfixable bugs on day three, switching entirely to Windsurf — despite losing two days of work — restored momentum. Abandoning flawed foundations early costs less than compounding bad code throughout a build.
  • Structured daily focus blocks: Each of the 7 days had one defined goal, executed in 3–4 hour deep work sessions with notifications off. This single-goal-per-day structure produced a payment-ready, deployed app within the deadline without multitasking across features.
  • Layered payment testing: A SaaS selling platform requires two payment flows — charging the end customer and enabling that customer to charge their own buyers. Test both flows by deliberately skipping steps and changing sequences to surface bugs that linear testing misses.

What It Covers

Omar Zenhom, founder of Webinar Ninja, documents a 7-day experiment building a fully functional SaaS app called Nikki using AI tools, with collaborator Chris Ashby, revealing what AI can realistically deliver under extreme time constraints.

Key Questions Answered

  • AI-assisted development speed: Tasks requiring a professional developer one month to complete can be accomplished in 3–4 hours using AI coding tools like Leap or Windsurf. Treat AI as a skilled developer by providing precise, detailed instructions rather than vague prompts.
  • Sunk cost discipline: When an AI tool (Leap) produced unfixable bugs on day three, switching entirely to Windsurf — despite losing two days of work — restored momentum. Abandoning flawed foundations early costs less than compounding bad code throughout a build.
  • Structured daily focus blocks: Each of the 7 days had one defined goal, executed in 3–4 hour deep work sessions with notifications off. This single-goal-per-day structure produced a payment-ready, deployed app within the deadline without multitasking across features.
  • Layered payment testing: A SaaS selling platform requires two payment flows — charging the end customer and enabling that customer to charge their own buyers. Test both flows by deliberately skipping steps and changing sequences to surface bugs that linear testing misses.

Notable Moment

After successfully building a competitive app in 7 days, Omar decided not to sell it — concluding that building a product is achievable with AI, but sustaining a software business for a decade is a lifestyle cost he was unwilling to pay again.

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Episode Transcript

I spent ten years of my life building, scaling, and eventually selling my software business Webinar Ninja. And to be honest, it was an absolute battle all ten years, but I wanted to test myself. I wanted to see if I can do it again, if I can build a software that really rivals the industry leaders. But I wanted to do it this time only using AI. And one more thing, I wanted to do it in just seven days. I'm talking about a fully functional, fully deployed, ready to take payments app. I have to ask a question, is this even possible? This episode is about, you know, building with AI, and we're gonna get into that. But it's really about, can you build something under constraints? Can you do it under a ridiculous timeline? And maybe you can. I'm gonna share with you exactly what I went through day by day for seven days so that you can follow along. Welcome back to the $100 MBA show. I'm your host, Omar Zenholm, where I deliver practical business lessons three times a week, Monday, Wednesday, and Friday to help you start, grow, and scale your business. If this show has helped in any way, it would be amazing if you could drop us a quick review on whatever app you're using to listen to this podcast right now. It helps me and my team bring new episodes every week, and more importantly, more entrepreneurs will be able to discover our podcast so you can help someone else start their journey. Thanks so much. With this new wave of AI, you can pretty much build anything that you imagine. There's no shortage of ideas. You can go down rabbit holes. It could get really complex and overwhelming. But as someone who's built and sold a software business before, I'm gonna share with you what you should do and what you shouldn't do if you're thinking about doing this yourself. First things first, I had to work out what am I gonna build? What is this app going to do? So I decided to build an app for creators that want to sell their courses, wanna sell their products or coaching easily and not in a clunky complex way. I decided to call it Nikki after my cofounder and wife, Nicole. So the goal is to make sure, number one, the product actually does what it says it's going to do. But number two, that it's an easy to use app that customers can get set up and running and sell their products in minutes. Our first step was to build out a plan. I knew that if I was gonna pull this off, I'm gonna need some help. So I called about a friend of mine, Chris Ashby, who's the best in the game when it comes to building with AI. So, Chris, I'm so happy that I got to sit down and meet with you. Is it possible …

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Tools

  • When an AI tool (Leap) produced unfixable bugs on day three, switching entirely to Windsurf — despite losing two days of work — restored momentum.
  • Omar Zenhom, founder of Webinar Ninja, documents a 7-day experiment building a fully functional SaaS app called Nikki using AI tools.
  • Tasks requiring a professional developer one month to complete can be accomplished in 3–4 hours using AI coding tools like Leap or Windsurf.
  • Omar Zenhom, founder of Webinar Ninja, documents a 7-day experiment building a fully functional SaaS app.

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