The story
Zach Yadegari and Henry Langmack started Cal AI at 17, while still in high school (founder post on X; MyFitnessPal press release).
- 2024: Cal AI is founded (TechCrunch).
- 2025: about $30 million in revenue for the year (Forbes).
- Dec 2025: MyFitnessPal's purchase of Cal AI closes. The price was not disclosed (TechCrunch).
- 2 Mar 2026: the deal is announced. MyFitnessPal tells TechCrunch Cal AI had more than 15 million downloads and over $30 million in annual revenue. In MyFitnessPal's own press release, the founder says the app made "over $40 million in sales in the last 12 months".
- 2 Mar 2026: the founder posts on X that Cal AI "broke $50m in ARR" (annual run rate: this month's recurring revenue times 12).
- Jun 2026: Yadegari leaves MyFitnessPal (TechCrunch, 8 Oct 2026).
- 15 Oct 2026: at TechCrunch Disrupt he explains that growth came mostly from paying many small influencers to post about the app.
⚠ The three numbers measure different things: $30M+ is yearly revenue reported by the buyer, $40M is the founder's 12-month sales figure, and $50M is the founder's run rate at one moment. Team size also differs by source: 7 employees plus contractors (MyFitnessPal via TechCrunch) versus a "30+ person team" (founder on X, which likely counts contractors; not confirmed).