JITTER

This app is an app for experiment participants that can measure alpha waves using an illusion called jitter illusion. At this time, only those who participated in the experiment can use the app. We would appreciate it if you could cooperate with the research and provide experimental data.
※ Note) In order to use the app, you need a "user ID" and "password" given in advance.

This app acquires the following health care information.
・Number of steps
·sleep
·Heart rate
・Heart rate variability
・Resting heart rate
・Average heart rate while walking
It also cooperates with Fitbit to obtain this information.