This APP can track and monitor users' heart rate in real time through a Bluetooth heart rate strap, and also supports Polar H10 devices, which can read electrocardiogram (ECG) and RR signals in real time. By collecting these heart rate-related data and conducting professional analysis, it helps users grasp their own heart rate status in a timely manner. Among them, Polar H10 can provide richer and more accurate data to support analysis. Please note that all analysis results are for experimental research use only and shall not be used as medical assistance or judgment basis; if users feel unwell, please seek medical advice in time.