I'm sorry. Due to the specifications of this application, as you shake the iPhone like a pedometer, there will be no increase in steps.
The reason is that this application uses the function installed in the iPhone called health care, it takes a little time to read and display data from health care. Also. This application has been developed so as not to display in real time because always keep reading that in real time will exhaust the iPhone's battery. If you want to immediately update the display of the number of steps, please press the update button on the upper right of the screen.
In addition, due to health care specifications, even if you press the update button, the number of steps may not be reflected immediately. It will be displayed soon in about a few minutes, so do not worry.