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Napkin Math

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the hyper-The hyper-personalized AI food journal that helps people…

P26·Spring 2026·Consumer·San Francisco, CA, USA·Team of 3·Founded 2026

About

Existing consumer health apps focus on scaling a one-size-fits-all solution: calorie deficits. But they don’t answer the questions you actually have. Food is deeply personal, and so is Napkin Math: Get the fuel you need for marathon training, while understanding you eat catered office lunches five days a week. Discover what’s triggering your stomach irritation, without sacrificing your weekly dinner with friends. Napkin Math tailors a plan for not only your specific health goal, but also your life.

Founders

  • Manuel Castro· Founder

    Building Strava for Food Logging Previously: Sonos, Healthcare Tech, Verkada

  • Claire Nord· Founder

    Making Napkin Math: Strava for food. https://napkinmath.club/download Prev. Apple OS security, Samsara, MIT 6-3 '19

  • Jynnie Tang· Founder

    Making Napkin Math, Strava for food Previously: Retool, One More Multiverse, MIT

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