Google Cardboard does work with iPhones, provided you have the right apps.
{"GPS GPSDate": "2014:08:15", "GPS GPSImgDirection": "117", "GPS GPSImgDirectionRef": "M", "GPS GPSTimeStamp": "[17, 57, 14]", "Image GPSInfo": "460", "Image DateTime": "2014:08:15 13:58:38", "Image Model": "A0001", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "172", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image XResolution": "72", "Image Make": "ONEPLUS", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail XResolution": "72", "Thumbnail Compression": "JPEG (old-style)", "EXIF ApertureValue": "2", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "430", "EXIF DateTimeDigitized": "2002:12:08 12:00:00", "EXIF ShutterSpeedValue": "1411/250", "EXIF ColorSpace": "sRGB", "EXIF DateTimeOriginal": "2014:08:15 13:57:14", "EXIF FlashPixVersion": "0100", "EXIF ExifVersion": "0220", "EXIF ExifImageLength": "765", "EXIF ExifImageWidth": "1000", "EXIF FocalLength": "379/100", "EXIF Flash": "Flash fired, compulsory flash mode", "EXIF ExposureTime": "1/50", "EXIF ISOSpeedRatings": "175", "EXIF ComponentsConfiguration": "YCbCr"}