Founder Directory
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Founders3
Known for these resultsRole67%Role is parsed from founder titles in yc.db. Known for 67% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company33%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 33% of these rows have at least one match.School67%School is matched from bios, case-sensitive for acronyms. 67% of these rows have at least one match.
- Claire Nord@clairen19Founder/CTO · Napkin MathX26Consumer · San Francisco
- Jynnie TangFounder/CEO · Napkin MathX26Consumer · San Francisco
- Manuel Castro@manny4cFounder · Napkin MathX26Consumer · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Claire NordNapkin MathFounder/CTOSpring 2026ConsumerSan Francisco, United States3https://x.com/clairen19Jynnie TangNapkin MathFounder/CEOSpring 2026ConsumerSan Francisco, United States3—Manuel CastroNapkin MathFounderSpring 2026ConsumerSan Francisco, United States3https://x.com/manny4c
Showing 1–3 of 3 founders
Claire Nord
Founder/CTO·Napkin Math
PRIMARY INFO
RoleFounder/CTO
Team size3
BatchSpring 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Building Napkin Math, hyper-personalized AI food journal https://napkinmath.club Prev. Apple OS security, Samsara, MIT 6-3 '19
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
Disciplinenot detectedKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Napkin MathAI nutrition coach in your pocket
IndustryConsumer
Websitenapkinmath.club
Team size3
LocationSan Francisco, United States
BatchSpring 2026
