Zach Yadegari details the influencer strategy behind Cal AI's rise

Zach Yadegari, founder of the AI-powered calorie-tracking app Cal AI, is only 19 and only recently graduated high school — but his company has become one of the past two years’ standout viral consumer apps. Speaking at TechCrunch Disrupt on Thursday, he laid out the growth strategy behind that rise: a deliberate bet on a large number of paid influencers rather than traditional marketing.

Cal AI, founded in 2024, generated over $30 million in revenue over two years and was acquired by MyFitness for an undisclosed sum in March. Yadegari said an early signal that the approach would work came when a single influencer’s post brought the app approximately a thousand new users over two days. From there, he said, the team began recruiting influencers “as fast as we could,” paying as many as possible to post about the app — negotiating rates tied to specific reach targets rather than flat fees. Many of the influencers he recruited, he said, were college students who wanted straightforward cash for posts, which made usage-based deals easy to negotiate. He described the resulting growth curve as linear but unusually fast: each additional post converted viewers into app downloads at a predictable, repeatable rate, letting the team scale spend with confidence.

Yadegari, a Forbes 30 Under 30 honoree, said the strategy’s core insight was about selecting the right partners rather than just paying for volume. “The biggest thing for us was finding influencers that had very tight communities,” he said. He credited his family, including his father, who was in the audience, with giving him the freedom to pursue the company instead of a conventional path. Asked whether he credits his education for the success, Yadegari said no — in his view, college is worthwhile mainly for its social experience, not for building a company.

Earlier this month, Yadegari launched a second company, Persona, an AI agent startup that has already raised $10 million. He described Persona’s goal as making computing “seamless with human life,” with a personal AI assistant intended to operate across any channel with an internet connection — including iMessage, apps, email and phone calls — and said part of what distinguishes Persona’s plans is the intent to build a “hardware ecosystem around” the assistant, not software alone.

Why it matters

Cal AI’s trajectory — a lean, influencer-driven growth playbook that produced tens of millions in revenue and an acquisition within two years — gives founders outside Silicon Valley’s traditional venture-marketing orbit a tested template for consumer-app growth that doesn’t require a large ad budget.