iPhotoVR SBS VR Photo Viewer Cardboard / Slideshow is a free, lightweight, and ad-free application that allows users to view any photo on their Android phone in huge theater size using a virtual reality (VR) headset such as Google Cardboard. The app, developed by PANAGOLA, is the tiniest SBS photo viewer for VR headsets, with just 50KB in size. It can be accessed from the file manager and supports a slideshow of photos. It also works on phones that are not Cardboard compliant, and has a mode for normal, non-SBS display. However, it is important to note that this app is only for viewing normal photos through VR headsets and not for 180 or 360 type VR photos.

The app supports only popular image formats such as jpg and png, and does not display web images. It also does not use magnetic navigator controls or head tracking. Users may experience slight lag when loading high-resolution photos on weaker devices. For those who are not familiar with cheap VR displays that can convert mobile screens into a virtual movie theater, links to Google Cardboard and Tom's Guide are provided.