Ada Health

Ada Health is an AI symptom assessment app that guides users through a structured conversation about their symptoms and generates a list of possible explanations with probability rankings and recommended next steps. Used by over 15 million people, it helps individuals decide whether to seek urgent care, schedule a doctor's visit, or manage symptoms at home. Consumers in countries with limited healthcare access, patients preparing for doctor's appointments, and healthcare systems triage patients use Ada to get initial guidance on health concerns. The medical knowledge base underlying Ada's assessments has been developed with clinical physicians. Ada's clinically-informed approach distinguishes it from general AI chatbots answering health questions: its assessment flow is structured, its probability outputs are calibrated against clinical data, and it consistently routes users to appropriate care rather than attempting to diagnose.