The demo app is developed using the educational software MIT app inventor 2.
Added MIT VR Helper in Google Play.
Three photo spheres that show the sky localization of the gravitational-wave event GW170814 with different image background - IRIS (infrared band), Mellinger (optical band) and Fermi (gamma band).
Before running running the app, please, install the MITVRHelper application for Cardboard here http://bit.ly/2vVVp92
The demo app is developed using the educational software MIT app inventor 2 (http://ai2.appinventor.mit.edu/). The source code is hosted here http://bit.ly/2nPMO3c.
The App Inventor project (aia) file can use as a starting point for your own variations of the app. Contributions welcome!
More details in "Experiments with Virtual Reality and MIT App Inventor" of Kseniia Shulmelchyk (http://ai2.appinventor.mit.edu/reference/other/vr.html).