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From idea to co-founder match platform in 8 days — Built solo. No code. No tech skills

Last week cracked my brain open — and completely rewired how I build products.

Now I launch and think completely differently.

In 8 days and with 160M tokens, I built yofounder.com solo

Here’s exactly how I did it.


1/20

I’m a product designer. My dev skills? Pretty much just Webflow and a little Bubble.

Now all I need is brainpower, stubbornness, and coffee to launch a full tech product — solo.

Here’s how I pulled it off. And how you can too.


2/20
June 8

I apply to my first-ever hackathon
hackathon.dev by Bolt.

The tagline: “The hackathon for non-devs and vibe coders!”

I join as a skeptic.

I’m convinced AI is just a landing page toy.

My goal? Meme on it, test some prompts, post a hot take. That’s it.


3/20
June 10

I get the builder pack. I write my first prompt — a long-winded spec for YoFounder’s MVP.

I wait 15 minutes. Bolt hums, spins…

I’m stunned.
And then delivers a working version.


4/20

On screen:
✔️ Landing page with senior-level copy
✔️ Sign-up flow
✔️ Dashboard
✔️ Invitation system

To get this from my dev team, I’d need a month of specs + 40 days of full-time engineering.

Here?

One prompt.
15 minutes.
Done.


5/20

First thought: Even if it all goes downhill from here — I just saved 30 days.

What I didn’t know: the rabbit hole had only just opened...


6/20
June 11

I upload 50+ co-founder compatibility questions into Bolt.

UI, autosave, form logic — it’s all generated and running.

I’m floored. It flies.


7/20
June 12

The 66-question assessment is live.

I prompt AI for analysis logic — and it starts spitting out the same "unique" result every time 🤡


8/20

My free 10M tokens run out.

I throw $50 → get 13M more.

Keep fighting AI. It’s stubborn. I’m meaner.


9/20
June 14

Breakthrough.

The AI finally works:
✅ It compares answers
✅ Spots misalignments
✅ Writes partnership insights

Now I just need a QA. And coffee. And sleep.


10/20

I decide to add profile avatars. Small tweak, right?

Nope:
❌ Login dies
❌ Sign-up hangs
❌ Console goes full hellfire

Bolt: "No rollback."

Me: Deep sigh + buying 21M more tokens


11/20
June 15

Bolt asks for a local push to Supabase

First real terminal session of my life. Install Docker, Homebrew, Supabase CLI.

Mac’s crying.

I’m crying.

GPT’s the only one holding it together.


12/20

Next 2 days = SQL warzone.

Migrations fail.

RLS policies clash.

Cycle: supabase db push → edit SQL → push → error Repeat 🔁


13/20

Then Supabase whispers: "You’ve hit your 5GB limit."

Me: 🫠

I pay $25 — and after several more SQL rituals, the dashboard comes back.

Buggy. But alive.


14/20
June 16

Upgrade to 120M tokens.

Bolt finally chills out.

I fix:
• UI logic
• Invite flow
• Metadata

Almost there.


15/20
June 18

I ship the first stable version of http://YoFounder.com

A product I had been dreaming about for a year.

Built in 8 days.


16/20

And this is just the beginning.

I’ve got 40M tokens left until July 10.

Next up:

⏱️User-to-user matchmaking
⏱️Triggered emails
⏱️Monetization


17/20

Bottom line?

You don’t need:
✘ Investors
✘ A CTO
✘ 10 months

You need:
✅ 1 week
✅ $200
✅ A brain full of chaos
✅ Ideally: a QA engineer co-founder

QA engineers are the new gold. Not a joke anymore.


18/20

Now?

These 8 days were the wildest, most productive stretch of my 10-year tech career.


19/20

If you’re building with Bolt — here’s my survival kit:

🧠 Prompt like a spec doc. Ruthless clarity.
🧪 QA = your new best friend
💾 Backup EVERYTHING
📦 Check your Supabase storage
🔁 Caught in a bug loop? Don’t quit. There’s always a way out.


20/20

I’d love feedback from early-stage founders, accelerators, angel groups — anyone helping teams form at day zero.

Try a match. Share how it went.
https://www.yofounder.com/

posted to Icon for group Building in Public
Building in Public
on June 19, 2025
  1. 1

    Interesting how the skillset shifts from traditional coding to system design, prompting. . Curious how you see this scaling as the product grows in complexity. Do you think you’ll eventually need a dedicated engineer, or can AI continue to be your main “cofounder”?

  2. 1

    That's great that you documented your whole solo-building journey.

    This is very similar to YC-cofounder matching, which I actually used to find my previous cofounder. We worked together for a year but ultimately we decided to go our separate ways. I still think the platform provided immense value and I think there will be more demand for cofounder matching since it definitely is a complex problem.

    Founders will spend more time with their cofounders than their actual partners so it is a very specialized matching system.

    1. 1

      As a founder, I always struggled with choosing the right co-founder. Platforms like YC Co-Founder Match were helpful for discovery, but lacked a way to validate compatibility.

      I wanted something that could help founders talk through differences before they become dealbreakers. That’s where the idea for YoFounder came from.

      1. 1

        That makes sense. Yeah YC-Cofounder matching mainly leaves all that stuff to the users once they connect.

        Definitely would be interesting to see a platform that outlines specific details of cofounding a business. Actually, YC-Cofounder matching sends you their word doc of how to find a good cofounder that I found very helpful. Would be interesting to have a process where the information in that doc are part of the process of finding a cofounder.

  3. 1

    A realistic look at what it actually takes to ship with these tools. Your experience shows it's less AI builds for you and more AI is a new kind of technical partner you have to actively manage and debug. The skill is shifting to system whispering. Great work pushing through it.

  4. 1

    Building things as a non-technical person is definitely possible now. But, I think it's mostly from 0 to POC phase. After a while, when the service get's complicated, the LLMs can't keep track. You'd need an engineer for something more serious. But, I guess it's a good start.

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