From a $100K app sale to $40M Cal AI: 19-year-old Zach Yadegari launches Flow
At just 19, Zach Yadegari has already sold two startups, including a gaming platform and the AI-powered calorie-tracking app Cal AI, which reportedly reached 10 million users and generated millions in revenue. Now, the young entrepreneur is launching Flow, a productivity-focused venture designed to help users overcome doomscrolling.
At 19, Zach Yadegari has already achieved what many people spend decades working toward: building successful technology companies, generating millions in revenue, and completing multiple startup exits.
Yadegari began coding at the age of seven. What started as a childhood interest soon evolved into a series of entrepreneurial ventures that would place him among a growing group of young founders challenging traditional ideas of success.
Before turning 20, he had already sold two startups, with exits ranging from six-figure deals to multimillion-dollar acquisitions. Now, he is building his third venture, a health and productivity company called Flow.
THE FIRST STARTUP EXIT AT 16
Yadegari's entrepreneurial journey began with Totally Science, a website that allowed students to play games online without downloads or registration.
Built while he was still a teenager, the platform quickly gained popularity among students seeking easy access to browser-based games. According to reports, Yadegari sold the website for $100,000, marking his first startup exit at just 16 years old.
For most teenagers, high school is a time for exams and extracurricular activities. For Yadegari, it was also a period of learning how to build, grow, and sell a technology business.
BUILDING AN AI APP USED BY MILLIONS
His second venture, Cal AI, operated on an entirely different scale.
The AI-powered calorie-tracking application experienced rapid growth, attracting approximately 10 million users worldwide. The company reportedly generated around $30 million in annual revenue and was on a growth trajectory approaching $40 million in the 12 months ending March 2026.
The app's success eventually attracted the attention of major players in the health-tech industry. Late last year, Cal AI was acquired by MyFitnessPal, one of the world's best-known health and fitness platforms, in a deal whose financial terms were not publicly disclosed.
The acquisition marked another significant milestone in Yadegari's entrepreneurial career before he had even reached his twenties.
THE THIRD VENTURE: FIGHTING DOOMSCROLLING
Following the sale of Cal AI, Yadegari shifted his focus toward a new challenge: helping people improve their daily habits.
His latest startup, Flow, combines productivity, wellness, and physical technology. The company's first product, the Flow Alarm Clock, is designed to help users avoid one of the most common modern distractions—morning doomscrolling.
Unlike traditional alarms, the device requires users to physically get out of bed and tap a dock to turn it off. Until that action is completed, selected smartphone applications remain blocked.
Explaining the inspiration behind the product, Yadegari told Business Insider: "I sometimes wake up, and I scroll on my phone for 30 minutes."
The device also tracks sleep patterns and sound, blending hardware with behavioural software in an attempt to improve morning routines and overall productivity.
REJECTED BY ELITE UNIVERSITIES
Despite his entrepreneurial success, Yadegari's academic journey took an unexpected turn.
With a 4.0 GPA and strong test scores, he applied to several elite institutions, including Harvard and MIT. However, he was rejected by multiple top universities.
He eventually accepted an offer from the University of Miami, citing its social atmosphere and entrepreneurial culture as key reasons for his decision rather than its prestige.
Initially enrolled in business school, he later switched to philosophy while continuing to study entrepreneurship.
Following his university rejections, Yadegari also drew attention for publishing an open letter arguing that colleges should place greater emphasis on merit in admissions decisions.
A DIFFERENT DEFINITION OF SUCCESS
Yadegari's story reflects a broader shift among young entrepreneurs who are increasingly questioning whether elite degrees are the only path to achievement.
Rather than focusing solely on academic credentials, many are prioritising practical skills, execution, and the ability to solve real-world problems.
For Yadegari, success arrived long before graduation. With two startup exits already behind him and a third venture underway, his journey suggests that in today's technology-driven economy, innovation and execution can sometimes matter as much as the name printed on a diploma.
At 19, Zach Yadegari has already achieved what many people spend decades working toward: building successful technology companies, generating millions in revenue, and completing multiple startup exits.
Yadegari began coding at the age of seven. What started as a childhood interest soon evolved into a series of entrepreneurial ventures that would place him among a growing group of young founders challenging traditional ideas of success.
Before turning 20, he had already sold two startups, with exits ranging from six-figure deals to multimillion-dollar acquisitions. Now, he is building his third venture, a health and productivity company called Flow.
THE FIRST STARTUP EXIT AT 16
Yadegari's entrepreneurial journey began with Totally Science, a website that allowed students to play games online without downloads or registration.
Built while he was still a teenager, the platform quickly gained popularity among students seeking easy access to browser-based games. According to reports, Yadegari sold the website for $100,000, marking his first startup exit at just 16 years old.
For most teenagers, high school is a time for exams and extracurricular activities. For Yadegari, it was also a period of learning how to build, grow, and sell a technology business.
BUILDING AN AI APP USED BY MILLIONS
His second venture, Cal AI, operated on an entirely different scale.
The AI-powered calorie-tracking application experienced rapid growth, attracting approximately 10 million users worldwide. The company reportedly generated around $30 million in annual revenue and was on a growth trajectory approaching $40 million in the 12 months ending March 2026.
The app's success eventually attracted the attention of major players in the health-tech industry. Late last year, Cal AI was acquired by MyFitnessPal, one of the world's best-known health and fitness platforms, in a deal whose financial terms were not publicly disclosed.
The acquisition marked another significant milestone in Yadegari's entrepreneurial career before he had even reached his twenties.
THE THIRD VENTURE: FIGHTING DOOMSCROLLING
Following the sale of Cal AI, Yadegari shifted his focus toward a new challenge: helping people improve their daily habits.
His latest startup, Flow, combines productivity, wellness, and physical technology. The company's first product, the Flow Alarm Clock, is designed to help users avoid one of the most common modern distractions—morning doomscrolling.
Unlike traditional alarms, the device requires users to physically get out of bed and tap a dock to turn it off. Until that action is completed, selected smartphone applications remain blocked.
Explaining the inspiration behind the product, Yadegari told Business Insider: "I sometimes wake up, and I scroll on my phone for 30 minutes."
The device also tracks sleep patterns and sound, blending hardware with behavioural software in an attempt to improve morning routines and overall productivity.
REJECTED BY ELITE UNIVERSITIES
Despite his entrepreneurial success, Yadegari's academic journey took an unexpected turn.
With a 4.0 GPA and strong test scores, he applied to several elite institutions, including Harvard and MIT. However, he was rejected by multiple top universities.
He eventually accepted an offer from the University of Miami, citing its social atmosphere and entrepreneurial culture as key reasons for his decision rather than its prestige.
Initially enrolled in business school, he later switched to philosophy while continuing to study entrepreneurship.
Following his university rejections, Yadegari also drew attention for publishing an open letter arguing that colleges should place greater emphasis on merit in admissions decisions.
A DIFFERENT DEFINITION OF SUCCESS
Yadegari's story reflects a broader shift among young entrepreneurs who are increasingly questioning whether elite degrees are the only path to achievement.
Rather than focusing solely on academic credentials, many are prioritising practical skills, execution, and the ability to solve real-world problems.
For Yadegari, success arrived long before graduation. With two startup exits already behind him and a third venture underway, his journey suggests that in today's technology-driven economy, innovation and execution can sometimes matter as much as the name printed on a diploma.
