Napkin Math

Active

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

Spring 2026Founded 20263 peopleSan Francisco, CA, USA

napkinmath.club ↗LinkedIn ↗X ↗GitHub ↗

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AI insightcan contain mistakes

Personalized Nutrition AISaaSHealth-conscious consumers, athletes, people with dietary restrictionsHigh competition

Moat

Proprietary personalization engine; integration with fitness/health wearables; lifestyle context understanding.

Key risk

Consumer habit-forming app market highly competitive; nutrition advice liability; churn risk high.

Why now

Metabolic health awareness rising; generic calorie counting failing users; LLMs enabling personalization at scale.

Competitors

Cronometer, MyFitnessPal, Calibrate, Noom, WW

↻ Pivot / rename signal

This company has previously operated under “Paper Star”. A rename frequently marks a pivot in positioning or product — useful raw material for variant ideas.

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.