It uses your desktop PC computing power to handle PC VR games and stream it into your phone via WiFi. It simulates the devices like Oculus Rift etc.
VRidge is capable of displaying high quality PC graphics and perfect handling of head rotations.
To play games with VRidge, you need RiftCat desktop client installed on your PC. Go to https://riftcat.com/vridge to know more.
Requires Windows 8.1 (AMD) or Windows 7 (Nvidia) and gaming GPU. See full requirements here.
Free version is limited to 10 minutes per session. You can unlock unlimited playtime through one-time payment in desktop app.