Zach Yadegari has already pulled off something rare in the startup world. He had made two successful business exits before turning 20, with combined deals ranging from six figures to multimillion-dollar territory. The best part is he has no plans to slow down. After selling two companies, he’s now building his third venture focused on health, productivity, and physical tech.ALSO READ: New York hot dogs under fireFirst Exit at 16: “Totally Science” Sold for $100,000Yadegari’s entrepeneurial journey began 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 MyFitnessPalHis second venture, Cal AI, was on a completely different scale. The AI-powered calorie tracking app exploded in popularity:10 million usersAround $30 million annual revenueRoughly a $40 million growth trajectory in the 12 months ending March 2026Late 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.ALSO READ: Bangalore remote worker earns Rs 4.5 lakh post-tax + Rs 1 lakh from freelance, hits gym off-peak and travels freely on US jobYadegari 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 EarlyFor 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 BetNow, 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 AttemptDespite 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 YadegariWith 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.