Juno

Active

AI Health Assistant for Chronic Illness

Spring 2026Founded 20252 peopleSan Francisco, CA, USA

junocompanion.com/ ↗LinkedIn ↗X ↗

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AI insightcan contain mistakes

Chronic Illness Health AssistantSaaSPatients with chronic illness; B2C and B2B2C via health plansMedium competition

Moat

Personalized health data and treatment protocols create switching cost; HIPAA moat from compliance expertise.

Key risk

Regulatory scrutiny on medical advice; clinical validation burden; competition from digital health incumbents.

Why now

Chronic disease prevalence and healthcare cost explosion drive telehealth and AI assistant adoption.

Competitors

Ro, Teladoc, Livongo

About

Juno is an AI personal health assistant for the 1B+ people living with chronic illness. Launched in October, Juno now supports 90,000+ patients globally and has grown to $65K MRR.

Founders · 2

Marshall GouldFounder

Oxford🎓 University of Oxford. Author

Co-Founder & CEO of Juno. MSc in Genomic Medicine from the University of Oxford. Author of 3 scientific publications and winner of multiple hackathons.

LinkedIn ↗X ↗

Isaac TolleyFounder

Co-Founder & CTO of Juno. Previously Founder's Associate at Mimotype (protein engineering) and neuroscience researcher at UCL. Studied Molecular Biology at UCL, led a 35-person team to win the international synthetic biology competition iGEM.

LinkedIn ↗X ↗

Launch

Launched on Y Combinator · May 2026

View launch post ↗

Juno helps people living with chronic illness reduce their symptoms and shorten the path to a diagnosis

Juno is an AI personal health assistant for people with chronic illness. The launch reports 80,000 global users (6 months) and 9,000+ five-star App Store reviews; it builds a longitudinal health profile from conversations, biometrics, and medical history to provide personalized symptom advice, continuous tracking, pattern detection, and appointment-ready PDFs.

Healthcare Consumer Health and WellnessHealth TechHealth & WellnessConsumer Products

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