iRhythm Technologies, Inc., a digital healthcare company, provides ambulatory electrocardiogram (ECG) monitoring products for patients at risk for arrhythmias in the United States. It offers Zio service, an ambulatory cardiac monitoring solution that combines a wire-free, patch-based, and wearable biosensor with a cloud-based data analytic platform to help physicians to monitor patients and diagnose arrhythmias. The company's Zio XT and AT monitors, a single-use, wire-free, and wearable patch-based biosensors, records patient's heartbeats and ECG data. It has a development collaboration agreement with Verily Life Sciences LLC to develop various next-generation atrial fibrillation screening, detection, or monitoring products. The company was founded in 2006 and is headquartered in San Francisco, California.