health-monitoring
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Amazfit Is Selling the Days Between Charges
The smartwatch industry's cheapest feature is another metric. Amazfit built its case around the dearer thing - a watch you can leave on your wrist long enough to matter.
The Startup Betting Your Ears Know Your Heart Better Than Your Wrist
synseer's HealthBuds skip the wrist and the fingertip, reading your heartbeat through sound inside your ear canal. It is a bet that the next big health tracker is a thing you were already wearing to take calls.
Prana
Prana is a San Francisco startup building a 24/7 AI doctor that watches your health data between checkups. It pulls your medical records and wearable data into one clinical timeline, watches for early warning signs the company calls 'clinical drift' - rising blood pressure or glucose weeks before a crisis - and lets you chat with its AI for free or see a real physician for a flat $39 visit. Founded by Meer Patel, Vishvam Rawal, and Sanjit Menon, Prana launched out of Y Combinator's Winter 2026 batch.
Vivoo
Vivoo is a San Francisco-based health tech company that makes at-home urine test strips analyzed via smartphone camera. Founded in 2017, the company offers a wellness platform that measures 8+ biomarkers — including hydration, vitamins, minerals, pH, ketones, and oxidative stress — and delivers personalized nutrition and lifestyle recommendations through a free mobile app. Backed by $19.4M in funding led by Tim Draper, Vivoo is sold at Target, Walmart, and Sam's Club, and has expanded to 100+ countries with a focus on making lab-grade health insights accessible to everyday consumers.