MyFitnessPal has acquired Cal AI, the viral AI powered calorie tracking app built by teenage founders, marking one of the most notable consumer AI deals of the year. The acquisition follows months of pursuit and reflects a broader shift in health tech, where legacy platforms are increasingly buying fast growing AI native startups rather than attempting to rebuild their own systems from scratch (Bort; The Tech Buzz). Cal AI was founded by Zach Yadegari, now 19, who began build