The ACRO-1 app measures oxygen saturation and pulse rate from the ACRO-1 ring (wearable ring) and provides them to the user.In the ACRO-1 app, oxygen saturation and pulse rate are monitored in real time by connecting to the ACRO-1 ring via Bluetooth, and you can check the history of the measured values.It provides an alarm function for oxygen saturation and pulse rate thresholds set by the user.The ACRO-1 app is to be used by individuals only for health management purposes, and cannot be used for diagnosis or treatment of diseases by non-medical personnel.