Founded in 2019, Circular is a medical-grade ecosystem designed to transition healthcare from reactive treatment to proactive prevention. Starting with the world’s first calibration-free, 24/7 cardiovascular monitoring ring, Circular aggregates continuous biometric data into a "Human Health OS." By combining miniaturized sensing technology with AI-driven clinical insights, Circular provides the data infrastructure to increase human lifespan and decentralize healthcare, moving it from the hospital to the individual.