This document discusses the development of a wearable respiratory rate sensor to diagnose sleep apnea. Sleep apnea causes breathing interruptions during sleep and can decrease oxygen levels in the blood. Existing diagnosis methods require hospital equipment and observation. The proposed system uses flexible sensors attached to the body to wirelessly monitor respiration rate, temperature, and other vital signs at home. Data will be sent to a server and accessible to doctors remotely for sleep apnea diagnosis and monitoring.