You’ve no doubt been hearing a lot about “vibe coding” lately – people building full apps and products just by prompting AI. I’ve been using AI to code all kinds of tools, mostly in Google sheets, to make work life easier. But I’ve been wanting to try building a new website entirely with AI, combining vibe coding and programmatic SEO, to see if I could actually produce something useful.
So over the weekend I gave it a shot, and built EasyCalc.tech end to end with AI.
The idea was simple: build a site that had real utility, real search demand, and a chance—however small—of getting actual users. I landed on calculators. Not because it’s sexy, but because it’s practical. There’s a huge long tail of “[something] calculator” keywords with decent volume and very low competition.
The twist was distribution. Instead of just building a calculator site, I wanted every tool to be embeddable—something other websites could drop into their own pages. In theory, that creates a passive link-building loop alongside organic search traffic. Here’s an example of the Bandwidth Calculator, embedded here…
I used Codex to build everything on the front end. The logo came from from Gemini. Design system via Stitch. My role was mostly direction, QA, and pushing the AI when it got things wrong.
What came out of it is EasyCalc — a growing library of calculators targeting low-competition, high-intent search terms.
It’s not rocket science. But that’s kind of the point.
This is a project I simply wouldn’t have bothered to buid a year ago. I might have looked at the search demand and thought about it, but the cost—in time, money, and effort—just wouldn’t have justified it. Now, spinning up a functional MVP like this is almost trivial.
Which raises a more interesting question:
If it’s this easy to build something… what’s actually worth building?