Napkin Math
ActiveAI-nativeAI nutrition coach in your pocket
What it does
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.
Its site says now · captured 2026-08-23
Napkin Math
A simple, beautiful food diary that helps you understand your eating habits over time.
Next to it in Consumer · AI nutrition coaching app
- ImperfectY Combinator X26
Adaptive training coach for runners, cyclists, and triathletes
- NoriY Combinator F25
AI health coach in your pocket
- CoraY Combinator W24
AI Fitness Coach
- Lumin FitnessPlug and Play PnP 2025
Lumin Fitness is the future of workouts—where smart technology, immersive environments, and personalized coaching come together to create a fitness experience that’s interactive, effective, and designed for you.
- trophi.aia16z speedrun SR004
trophi.ai is building the AI coaching revolution—an expert coach for any skill, available anytime, anywhere.
- Notti500 Global
Operator of an online store intended to change the pet industry in Malaysia. The company offers slow-baked, grain-free kibbles made with protein content and human-grade fresh meat designed to support pet health and wellness, enabling owners to provide healthy food option to their pets.
- rex.fitY Combinator W23
Automating nutrition tracking.
- RareLee500 Global
Developer of a personalized style consulting platform designed to help individuals discover and refine their unique fashion, hair and makeup identity. The company offers AI-assisted and expert-led style consulting services across hair, makeup and fashion, using biometric analysis and over a million categorized style profiles, enabling customers to gain tailored recommendations that enhance their appearance, boost confidence and align with their personal aesthetic