MyFitnessPal acquires AI diet-tracking app Cal AI
Cal AI, the AI-powered diet-tracking app co-founded at age 17 by Zach Yadegari, has reached 15+ million downloads and $30 million in annual revenue. In December 2025 it was acquired by MyFitnessPal; the app remains standalone with the same team.
Cal AI, an app that uses a photo of food and the phone's depth sensor to estimate calories and macronutrients, reportedly reached more than 15 million downloads and annual revenue exceeding $30 million, according to the source. The app was co-founded by Zach Yadegari, then a seventeen-year-old high school student; earlier, at age 16, he sold another of his platforms, Totally Science, for an amount in the hundreds of thousands of dollars.
Cal AI was acquired by MyFitnessPal in December 2025. According to the source, after the acquisition the app remained a standalone product, the entire seven-person team was retained, and Yadegari stayed on in leadership.
The source is largely promotional text for Zach Yadegari's appearance at the TechCrunch Disrupt 2026 conference, where he is set to talk about how Cal AI achieved viral growth and how the company managed to turn that growth into a sustainable business. The source does not provide details about the content of the talk itself or other circumstances of the acquisition.
Why it matters
The case demonstrates how quickly a consumer AI app built by a small team can reach tens of millions of users and become attractive for acquisition by an established industry player, without having to lose its identity or team in the process. For founders and investors in the consumer AI product space, this serves as a concrete reference point for the pace of growth and the structure of similar deals.
Two audiences, two different impacts
What this means
For individuals
Even after the acquisition, Cal AI users will continue to use the same standalone app with the same seven-person team retained, so in practice nothing changes for them.
More practical updates →For a business
The case shows that a consumer AI app managed to grow to 15 million downloads and $30 million in annual revenue in under two years, and subsequently became an acquisition target for an established player in the field (MyFitnessPal), which kept it as a standalone product with the same team after the purchase — a relevant pattern for companies considering M&A in this segment…
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Event sources
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