Microsoft has come up with its own app known as Seeing AI which allows blind and limited-vision folks to convert visual data into audio feedback. With this new feature, users can touch to explore the objects and people in photos. Read more at techcrunch.com
You just need to take a photo or open one up in the viewer and tap anywhere on it. Users will be able to tap their finger to an image on a touch-screen in order to hear a description of objects within an image.
This app is free and can be downloaded for iOS devices.