How to find a good niche. How Zach Yadegari built Cal AI. A case study.

Last updated on 05 Nov 2025

Recently having done a CNBC episode, Zach is an amazing entrepreneur. He is only 18 and has already built an app doing over $1M per month. Now most people are looking to understand just how he did it. Its very simple. He found a niche that noone was going after and exploited it.

Its something every business owner should be doing. While going to the gym there was no way to easily find how many calories food contained without going through the laborious process.

Cal AI simply takes a pic of the food and using AI automatically tells you how many calories that food has. Its genius, and simple and it works having been downloaded millions of times.

He recently bought a Lamborghini and loves life!

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