Gyro Checker for VR

When to use the smartphone VR, the accuracy of the gyro-sensor is very important.
In this app, you can check the accuracy of your device gyro sensor.

In addition, since also displays the value of the gravity sensor, also available as a simple level.
However, the accuracy can not be guaranteed, please do not use an important project.

You can still view and tap the screen.
I wonder if you can be stationary at the time of 0 all of x-y-z?