Built by someone who's done the math by hand.

Back in 2023, I was working for a concrete contractor. We were pouring a slab with an odd shape. It had weird angles and was impossible to easily estimate the concrete, so my boss said the line that started all of this:

So I did. I sat down and worked it out. It wasn't easy and took a lot of time. I was guessing and had the quiet worry that I might've got it wrong. I didn't want him to order too much and have to eat the cost, and I couldn't run short on a 95 degree day.

I knew that there had to be a better way. I looked up different concrete calculators and could only find ones with very simple shapes: circles, squares, and rectangles. I couldn't see a product that is something we actually needed.

That night I started building it myself. I took a semester of coding class in high school so I was not qualified. Honestly, the first prototypes worked but were rough. Then life got busy and I shelfed it.

A couple years later I found the files and realized I was much more prepared to build a product real contractors need. This time I built a complete estimating tool: draw the job, get the takeoff, price it, and give the client a proposal. The thing we wished we had standing in the field.

That's ConCal. Here we are.