How I built a product in 2 1/2 weeks that made $170 in revenue

I coded my startup in 2 1/2 weeks, and it made $170 within a couple weeks of launching it.

Here’s how I did it — from design, to coding, to launch.

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Common startup advice is to spend weeks talking to potential customers before writing a line of code.

My idea was to create an AI tool that would automate that whole interview process, so founders could do it all in a single day.

Design:

First, I needed designs. I rolled up to Upwork and shopped around for the best designer for the lowest price.

And I found him, for just $12 an hour!

But turns out, he was out of commission with pink eye, so I had to search for someone else. Luckily, the new guy was great, and he put together some beautiful designs for under $100.

I didn’t have to hop on any meetings with him — I just threw together a detailed Notion doc, and his designs were better than anything I could have imagined.

Coding:

Now, it was time for the actual work — to code this thing up.

I decided to be organized for once, and broke it up into tasks that I stored in a Notion database.

I then set up the project using React.js and Tailwind for the frontend, and Firebase for the backend.

One ticket at a time, I built the application, until it was finished 2 and 1/2 weeks later.

Launch:

After that, I threw together a demo video, which I posted in a bunch of Slack channels where founders hang out.

It didn’t even have a landing page, and you could only log in with Google. But somehow, the beta sold out, and I had almost $200 in the bank (which I spent almost instantly to "treat myself" – oops).

The product has seen a lot of improvements since, but these days I'm focused on finding a good way to find users. Currently playing around with cold emails and short-form videos, but I'm all ears if you have any ideas!

And if you’re working on a new product, you can use the tool I built to conduct your research in a single day → heyprobe.com