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Napkin Math

Active

AI nutrition coach in your pocket

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

About

Napkin Math is the personalized AI food journal that people love to use. We gamify nutrition tracking so people are 2x more likely to stick with us than other trackers. Claire, Manuel, and I (best friends for 10 years from MIT) are obsessed with how we can make nutrition fun, and turn fun into health outcomes. === 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

Change history · 3 recorded

  1. June 18, 2026
    • Description rewritten07:00 PM
  2. June 13, 2026
    • Pitch updated07:00 PM
  3. June 6, 2026
    • Pitch updated07:00 PM