Welcome to VR at Google
Google provides developers with two virtual reality (VR) platforms: Cardboard, the world's most popular and accessible mobile VR platform, and Daydream, a new platform for low-latency, immersive, and interactive mobile VR. The Google VR SDKs include everything you need to develop for these platforms, including libraries, API documentation, developer samples, and design guidelines.
Daydream is a platform for high quality, mobile virtual reality. Coming in Fall 2016, Daydream provides rich, responsive, and immersive experiences with hardware and software built for VR.
Cardboard lets you experience virtual reality in a simple, fun, and affordable way. Cardboard is built for bite-size VR experiences and works with almost any smartphone on Android or iOS.