Fibrum, a Russian Company, is very busy making VR-headsets and making Apps for iOS and Android to promote their devices.
So far they launched 4 Games/Showcases in the AppStore, all for free:
Roller Coaster VR
Another Roller Coaster, but a good one. The graphics are the best yes on the AppStore.
It's not a game, it's a Showcase. But it is a good one!
Zombie Shooter VR
Nice Graphics! Smooth play, clearly still in development and their is plenty of room for improvement.
For a free game it's worthwhile downloading!
Crazy Swing VR
Another showcase. Get on this crazy ride and feel your stomach as you turn around on a chair above a modern city.
A funny game for kids. Like all others above, you don't need a gamepad for this game and controlling the game is very simple.