Cardboard

The Android app "Cardboard" by Google LLC lets you experience virtual reality on your smartphone. It helps you launch your favourite VR experiences, discover new apps, and set up a viewer. The app is built on the Cardboard open-source software (OSS) SDK. To use it fully, you need a Cardboard viewer, which you can learn more about and purchase at http://g.co/cardboard. The app is designed for users who want to try virtual reality on their smartphone. However, it's essential to use this app responsibly, avoiding situations where it may distract you from real-world situations, such as driving or walking. By using Cardboard, you agree to follow Google's terms of service and privacy policy.

Cardboard puts virtual reality on your smartphone. The Cardboard app helps you to launch your favourite VR experiences, discover new apps and set up a viewer. The app is now built on the Cardboard open-source software (OSS) SDK.
To fully enjoy this app, you'll need a Cardboard viewer. Learn more and get your own Cardboard viewer at http://g.co/cardboard. To learn more about the Cardboard open-source project, visit our GitHub repository at https://github.com/googlevr/cardboard.
By using this app, you agree to be bound by our Google Terms of Service (Google TOS, http://www.google.com/accounts/TOS), Google's general Privacy Policy (http://www.google.com/intl/en/policies/privacy/) and the additional terms below. This app is a Service as defined in the Google TOS. The terms regarding software in our services apply to your use of this app.
Do not use this app while driving, walking or in any way that distracts you from real-world situations and prevents you from obeying traffic or safety regulations.