This article about designing for VR was posted to Smashing Magazine earlier this month. It describes a use case.
These were the tools they used:
Before we get started with the walkthrough, here are the tools we’ll need:
We’ll use Sketch to design our interfaces and user flows. If you don’t have it, you can download a trial version. Sketch is our preferred interface design software, but if you’re more comfortable using Photoshop or anything else, that would work, too.
GoPro VR Player
GoPro VR Player is a 360-degree content viewer. It’s provided by GoPro and is free. We’ll use it to preview our designs and test them in context.
Hooking Oculus Rift into the GoPro VR Player will enable us to test the design in context.