Been using Cardboard for a couple months now. It’s basically a virtual reality app that puts VR experiences right on your smartphone. Pretty solid app if you’re into that sort of thing.
Here’s what you do: you can launch VR apps, discover new ones, and set up your Cardboard viewer. There’s also a community you can join to share your experiences. Took me a while to figure some of that out but it’s useful.
Look, if you’re into virtual reality apps, you’ll probably like this. It’s not perfect – the setup can be a bit finicky at times – but overall it does the job. Worth checking out.