Jewish Student Rejected by 15 Colleges Builds $30 Million App

By William Lebovics September 9, 2026 13 views

Zach Yadagari created Cal AI, an AI food-logging app, while in high school, achieving $30 million annual revenue and selling for nine figures by age 19.

Meet Zach Yadagari, a Jewish entrepreneur who rejected 15 colleges while building Cal AI, an AI-powered food logging app that reached $30 million in annual revenue and 15 million downloads by age 19.

Zach Yadagari turned down acceptances from 15 colleges to pursue his entrepreneurial vision. By age 19, his AI-powered food logging app, Cal AI, had achieved 15 million downloads and was generating $30 million annually.

Yadagari's journey into technology began early, as he started coding at age 7. His motivation for creating Cal AI came from personal frustration with the fitness world, he got into fitness but hated the tedious process of logging every meal manually.

To solve this problem, Yadagari built an app that uses artificial intelligence to calculate calories directly from photos of food. This innovation eliminated the need for manual food entry, making calorie tracking significantly simpler for users.

Cal AI's success was evident in its financial performance and user base before its sale. The app was generating $30 million a year in revenue when it sold for an estimated nine figures, validating Yadagari's decision to forgo traditional college enrollment in favor of building his business.

Questions & Answers

What inspired Zach Yadagari to create Cal AI?

He got into fitness and hated the process of logging every meal, so he built an app that uses AI to tell you calories from a photo of your food.

How much revenue was Cal AI generating at the time of sale?

Cal AI was generating $30 million a year in revenue when it was sold for an estimated nine figures.

At what age did Zach Yadagari start coding?

He started coding at age 7.

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