Who is Zach Yadegari? US teen founder sold a gaming app for $100K, built $40M Cal AI, now launches 'Flow'

US teen Zach Yadegari has achieved what many entrepreneurs spend decades chasing. Before the age of 20, he had already exited two startups, with deals ranging from six-figure sums to multimillion-dollar valuations. And if his track record is any indication, he's only getting started.

After selling two companies, Zach Yadegari is now building his third venture focused on health, productivity, and physical tech, known as 'Flow'.

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First Exit at 16: “Totally Science” Sold for $100,000

Yadegari’s entrepeneurial journey started early at the age of 16 with Totally Science, a website designed to help students access unblocked games in restricted school environments. Zach Yadegari built it when he was still a teenager and reportedly sold the platform for $100,000, marking his first startup exit at just 16 years old.

Cal AI: $40M Growth Story, Then Acquired by MyFitnessPal

His second venture, Cal AI, was on a completely different scale. The AI-powered calorie tracking app exploded in popularity:

10 million users
Around $30 million annual revenue
Roughly a $40 million growth trajectory in the 12 months ending March 2026

Late last year, the app was acquired by health and fitness platform MyFitnessPal for an undisclosed sum, widely described as a major exit in the consumer health tech space.

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Yadegari said the decision to sell came from aligning goals within the founding team:

"Ultimately, it came down to us discussing everyone's priorities and goals in life. That framework really helped us come to a consensus of what we all wanted," Yadegari told Business Insider.

He added that the exit wasn’t the end of the journey — just a pivot point: "My life’s mission isn’t building a calorie tracking app."

Why He Sold Two Businesses Early

For Yadegari, selling early wasn’t about stepping back — it was about moving faster. He explained that financial freedom and creative direction mattered more than long-term attachment to one product:

"We want the legacy of Cal AI to live forever and continue to grow," he said. "At the same time, my life's mission isn't building a calorie tracking app."

Even after a multimillion-dollar success, he didn’t stay in the same lane.

New Venture: Flow and the $6.8 Trillion Wellness Bet

Now, he’s building Flow, a productivity and wellness brand starting with a physical product — the Flow Alarm Clock. The device forces users to physically get up and tap a dock to turn off their alarm. Until they do, selected apps remain blocked, aiming to stop morning doomscrolling.

He describes the motivation simply: "I sometimes wake up, and I scroll on my phone for 30 minutes." Flow also tracks sleep patterns and sound, blending hardware with behavioral software.

"We have to ship physical products and manufacture them," he said. "We have to scale with the amount of supply that we carry, and that’s tricky."

Big Ambition: Another Billion-Dollar Attempt

Despite already having two exits under his belt — one for $100,000 and another undisclosed but major acquisition, Yadegari is aiming higher. He has said he wants his next company to become a billion-dollar business.

That ambition sits in a booming industry. The global wellness economy is estimated at $6.8 trillion in 2024, with projections nearing $9.8 trillion by 2029.

What’s Next for Zach Yadegari

With two exits already completed and a third company in motion, Yadegari’s pattern is clear: build fast, scale fast, exit early — and restart.

From a $100,000 school gaming site exit, to a multi-million-dollar AI fitness app acquisition, to now a hardware bet on daily habits — his story is still in its early chapters.