I\'m using the Google Cardboard (its HeadTracker class) to detect certain things about device rotation in an AR application. It works very well.
HeadTracker
Ho
Use Fibrum SDK if you want your game working with no gyro phones
for example try
Space X Hunter VR :
https://play.google.com/store/apps/details?id=com.creation3d.spacexhuntervr
VR Bowl :
https://play.google.com/store/apps/details?id=com.creation3d.vrbowl
and the games from Fibrum