Instacalc Blog

Insights on building, calculating, and thinking with numbers

September 30, 2025

Welcome aboard

Dev journal for a passion project.

Hey! Kalid, Instacalc creator here (also see betterexplained.com and pastecal.)

Kalid Azad

Instacalc began as a passion project back in 2006. I wanted a calculator that gave answers as you typed -- a REPL -- but was more like Excel, with multiple rows. I made a quick version...

... and it worked! It was useful! Fun, even.

Over the years, it's evolved quite a bit:

And now it's at the latest version:

This blog is a journal / release update / outlet for fun thoughts. I'm an indy dev, not a giant SaaS, and this is the behind-the-scenes.

Welcome!