YC Spring 2026 (P26) company

Napkin Math

AI nutrition coach in your pocket

consumerconsumer93 public signals

About Napkin Math

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.

Public traction evidence

Each signal links to the public source used for attribution.

  1. Instagram

    guess that’s what happens when you’re traveling 😅 #foodjournal #homecooking

    guess that’s what happens when you’re traveling 😅 #foodjournal #homecooking

  2. Instagram

    We made a food journal that actually likes food. Comment to give it a try! #foodjournal #intuitiveeating #foodlog #foodieforlife #ibsfriendly

    We made a food journal that actually likes food. Comment to give it a try! #foodjournal #intuitiveeating #foodlog #foodieforlife #ibsfriendly

  3. Instagram

    answering the favorite question of moms everywhere: have you eaten yet? 🥹 happy Mother’s Day from us at Napkin Math! 💐 #foodjournal #foodjoy #foodjourney #intuitiveeating

    answering the favorite question of moms everywhere: have you eaten yet? 🥹 happy Mother’s Day from us at Napkin Math! 💐 #foodjournal #foodjoy #foodjourney #intuitiveeating

  4. Instagram

    we think we made something pretty adorable, and useful too. 🥹✨

    we think we made something pretty adorable, and useful too. 🥹✨

  5. X

    Im thrilled to launch @NapkinMath on @ProductHunt today with @clairen19 and @jynnie ! Napkin Math is the hyper-personalized AI food journal that helps people achieve their health goals as simple as taking a photo of your food so cute you'll share it with a friend Check us out! 0:00 / 0:05

    Im thrilled to launch @NapkinMath on @ProductHunt today with @clairen19 and @jynnie ! Napkin Math is the hyper-personalized AI food journal that helps people achieve their health goals as simple as taking a photo of your food so cute you'll share it with a friend Check us out!...

  6. Instagram

    made by and for foodies and journal lovers 🥰📔✍️🍲💖 #creativetech #foodjournal #junkjournal #appdevelopment

    made by and for foodies and journal lovers 🥰📔✍️🍲💖 #creativetech #foodjournal #junkjournal #appdevelopment

  7. Instagram

    Napkin math: your new favorite food journal, stickers included. #foodjournal #creativetech #analogvibes #techtok

    Napkin math: your new favorite food journal, stickers included. #foodjournal #creativetech #analogvibes #techtok

  8. Instagram

    me refusing to forget a single snack i ate in japan 🇯🇵 easiest way i found to keep a food journal while traveling #JapanFood #TravelTok #FoodJournal #Foodie #JapanTravel

    me refusing to forget a single snack i ate in japan 🇯🇵 easiest way i found to keep a food journal while traveling #JapanFood #TravelTok #FoodJournal #Foodie #JapanTravel