This story was originally published on HackerNoon at: https://hackernoon.com/i-spent-30-days-vibe-coding-an-mvp-burned-$127-broke-everything-and-still-found-product-market.
I have recently been diving into the world of vibe coding and I thought of cataloging my experience for the benefit of others.
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I spent 30 days building a financial planning tool for founders by “vibe coding”. Made every mistake possible. Burned through $127 in Replit credits. Got calculations wrong by 20%. Watched 23 "interested" founders become 2 signups.

But I also learned that:

(1) AI struggles with precision calculations, (2) founders don't want another spreadsheet—they want advice, and (3) sometimes less is more.

One founder offered $50/month for the simplified version. That's validation enough to keep going.

This was a great learning experience for me as I go to be on the other side of the table so to say. I spend time working with founders at accelerators and advising them about getting from zero to 1.

This was a good opportunity for me to “eat my own dog food”!

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