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StockWaves > Global Markets > How a teenage CEO constructed a fast-growing calorie-tracking app
Global Markets

How a teenage CEO constructed a fast-growing calorie-tracking app

StockWaves By StockWaves Last updated: September 6, 2025 11 Min Read
How a teenage CEO constructed a fast-growing calorie-tracking app
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From coding at age 7 to constructing a viral app in highschoolBalancing a CEO job with being a university pupil

Like hundreds of thousands of fellow 18-year-olds throughout the U.S., Zach Yadegari spent his summer time getting ready for faculty.

In contrast to most different freshmen, Yadegari doubts he’ll linger in academia for very lengthy. He is the co-founder and CEO of Cal AI, a calorie-tracking cell app he launched from his dad and mom’ house in Roslyn, New York, in Might 2024 — and the app’s success thus far makes him suppose he’ll take it full-time nicely earlier than his class’ commencement date, he says.

Cal AI’s customers add a photograph of their meals, and the app’s synthetic intelligence-based software program provides them an estimate of the full energy. The app, which Yadegari says has a 90% accuracy charge, launched in Might 2024. It is free to obtain within the Apple and Google Play app shops, and a subscription prices $2.49 per 30 days or $29.99 per 12 months.

Cal AI has 30 staff, and brings in roughly $1.4 million in gross revenue per 30 days — after the Apple and Google Play app shops take their respective cuts — in keeping with paperwork reviewed by CNBC Make It. That features almost $274,000 in month-to-month internet working revenue, a measurement of revenue earlier than accounting for taxes and curiosity.

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Yadegari began undergraduate courses on the College of Miami’s enterprise college in August, however would not plan to remain for greater than a 12 months, he says. On social media, he touts residing a lavish startup CEO way of life: He events “nearly each evening” in an off-campus mansion he shares “with all my mates,” he mentioned in an Instagram video posted on August 23.

Within the video, an commercial for a cell app growth on-line course that Yadegari co-launched, he then drives off — purportedly to class — in a Lamborghini with a “CAL AI” license plate. The remainder of the video options one man floating in a pool, one other doing pushups and a 3rd smoking a cigar whereas promising that “society lied to you, and cash does purchase happiness.”

After school, Yadegari goals of a profession in serial entrepreneurship, he says. Technically, he is already achieved the moniker: As a highschool freshman, he constructed a gaming web site referred to as Completely Science that helped college students play on-line video games on their colleges’ WiFi networks, bypassing web blocking protocols. He bought the web site for roughly $100,000 to gaming firm Freeze Nova in February 2024, paperwork present.

“I believe that entrepreneurship is absolutely cool as a result of on the finish of the day, age would not actually matter a lot,” says Yadegari. “You are both good or not good at what you do, after which the market will resolve [the] outcomes.”

From coding at age 7 to constructing a viral app in highschool

Impressed by his love of on-line video games like Minecraft, Yadegari’s mom despatched him to a summer time camp to be taught software program coding at age 7. From there, Yadegari “began binge-watching YouTube” for tutorials on coding various kinds of applications, direct messaging different coders and content material creators he noticed on-line to ask for suggestions, he says.

After launching Completely Science, Yadegari tried to create a viral cell app “as a result of everybody has a cellphone of their pocket,” he says. His concepts saved flopping, till he centered on a private drawback: He’d began figuring out “to impress the ladies at my college,” and each calorie-tracking app he downloaded made him manually enter all his meals, which he discovered tedious, he says.

He talked about it together with his good friend Henry Langmack, who he’d identified since coding camp, and two mates he met on social media platform X — Blake Anderson, 24, and Jake Castillo, 30. The group determined to attempt constructing an AI mannequin that might analyze images of meals and “do all the give you the results you want,” says Yadegari.

Yadegari and Langmack coded the app, and the group spent $2,000 on a social media advertising and marketing check run, says Yadegari. The response was optimistic sufficient for Yadegari and Anderson, a serial entrepreneur in his personal proper, to fund Cal AI’s working and advertising and marketing prices for six months till the app shops’ delayed cost schedules caught up.

Cal AI introduced in additional than $28,000 in income for its first month, after which $115,000 for the following month. The co-founders began hiring staff, with Yadegari and Langmack conducting interviews whereas staying in a San Francisco “hacker home” for the month of July 2024.

As soon as the summer time ended, Yadegari labored 40 hours per week on the app — writing code and brainstorming potential new options with Cal AI’s designers and builders — whereas managing his schoolwork at Roslyn Excessive College, he says. His dad and mom had been supportive of his efforts, and he maintained a 4.0 GPA, he says.

“My dad and mom are actually pleased with all the pieces with Cal AI, particularly my mother. She truly makes use of the app,” Yadegari says. “General, they’re actually proud.”

Balancing a CEO job with being a university pupil

A cell app could seem to be a comparatively low-upkeep enterprise thought, however Cal AI’s bills almost match its income.

The corporate spends nearly $770,000 per 30 days on promoting and advertising and marketing alone, for instance. Different prices embrace payroll, software program prices, and authorized and accounting companies. The co-founders do pay themselves some dividends from the app’s proceeds, together with one current $100,000 cost to Yadegari.

The corporate should additionally keep an excellent fame within the Apple and Google Play app shops. Cal AI could save customers a while in comparison with its extra conventional counterparts, nevertheless it’s not magic. Buyer critiques present quite a few complaints concerning the app’s accuracy: Customers nonetheless have to manually enter any info the app cannot detect, and proper something it will get incorrect.

Some clients have “misconceptions about Cal AI and what AI can do,” says Yadegari, including: “A few of our customers count on it to have X-ray imaginative and prescient, the place in case you take an image of a bowl of meals and also you hit issues on the backside of the bowl, it’ll choose it up. It will not.”

Yadegari hopes to make Cal AI “the largest calorie-tracking app,” which might seemingly imply topping trade chief MyFitnessPal’s self-reported 270-plus million customers. The startup’s app has 8.3 million downloads as of July, in keeping with a spokesperson, and Cal AI plans to shut the hole with extra hiring, advertising and marketing spend and rollout of recent options, Yadegari says.

For the primary time, he is the CEO of an organization with grownup staff whose households depend on their paychecks — a duty he tries to not take as a right, he notes. “I am unable to simply go away for a number of months and neglect issues, like I might have with earlier initiatives,” he says.

But for all of his long-term targets, Yadegari solely plans to run Cal AI for 2 extra years: After that, he’d wish to promote it or hand the reins to a different CEO so he can begin a brand new firm, he says. He is “not solely positive” what his subsequent enterprise will entail, past involving AI — however he hopes to “dedicate many of the remainder of my life” to it, he provides.

“Ideally, it actually shapes the long run and is a part of my legacy,” says Yadegari.

Wish to stand out, develop your community, and get extra job alternatives? Join Smarter by CNBC Make It is new on-line course, Learn how to Construct a Standout Private Model: On-line, In Particular person, and At Work. Study from three knowledgeable instructors how you can showcase your expertise, construct a stellar fame, and create a digital presence that AI cannot replicate.

Plus, join CNBC Make It is publication to get suggestions and methods for achievement at work, with cash and in life, and request to hitch our unique group on LinkedIn to attach with specialists and friends.



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