In order to connect Xiaomi Mi Band 1S and Xiaomi Mi Band 2 to the Apple Health app and transfer the results of continuous monitoring of Your heart rate to the Apple Health do these steps:
1. Start Mi Heart Rate app and measure Your heart rate (bpm) for few seconds.
2. Connect to Apple Health app in settings of Mi Heart Rate app.
3. Go to Apple Health App.
4. In Sources (Apple Health App) allow HR app to write data on heart rate.
5. Get Your heart rate data in Apple Health App.
6- Connect Apple Health in WeFitter's connections to transfer de data