How is Samsung Gear VR different from Google Cardboard?
Google Cardboard is just an easy introduction to virtual reality with little to no cost in making or getting the device. It heavily relies on a smartphone’s capabilities and processing to render VR. The Samsung Gear VR on the other hand have it’s own helping accurate sensors.
Because of the Gear VR’s accuracy and speed in tracking, what you see looks as if it exists outside the headset, whereas with Cardboard, you know you’re looking at images that exist only in the headset. The Gear VR is much more immersive.