A Wi-Fi–enabled DSLR or mirrorless camera, paired with a smartphone or tablet, offers several advantages, such as wireless transfer of images, the ability to review shots on a screen larger than the LCD on the camera body, remote shutter control, and other features. All of that requires good software, and too often the manufacturer’s efforts are basic or unreliable.
Cascable 3 for iOS is the better alternative that adds features many of the camera companies don’t. It’s available for free with a limited but solid set of capabilities. An in-app purchase adds Cascable Pro features.