Manuel Castro previously worked at Sonos, a healthcare technology company, and Verkada before founding Napkin Math, an AI-powered food journal application.
Intro paths
YC
Manuel went through Y Combinator (Spring 2026) — any YC alum in your network can reach them through the YC community.
→
In turn, Manuel can intro founders to Napkin Math's investors below.
Napkin Math's investors · 1
Co-founders
Jynnie Tang· FounderClaire Nord· Founder