I built an AI app with a tiny team. We scaled it to millions and sold it to MyFitnessPal in under 2 years — here's how.

Tech Insider : Business
A young man with tousled dark hair and a small goatee faces forward wearing a gray sweatshirt against a plain background.
Jake Castillo cofounded Cal AI in 2024.

Courtesy of Jake Castillo

I'm 18 and cofounded a multimillion-dollar company. Here's how I did it and my advice for other young founders.

Tech Insider : Business, Technology
A young man leans against a brick wall outdoors, wearing a black T-shirt and a gold necklace.
Zach Yadegari cofounded Cal AI in high school.

Courtesy of Zach Yadegari

I cofounded an app with a teenager, and we make over $1 million in profit a month. You never know who might change your life.

Tech Insider : Business
Man with dark hair sits in white chair and poses in a short sleeve printed shirt and shorts
Jake Castillo cofounded Cal AI with a former intern he worked with.

Courtesy of Jake Castillo

Subscribe to calorie-count