iOS comes standard with accessibility features that help people with disabilities experience all that iPhone, iPad and iPod touch have to offer including VoiceOver, the world's first gesture-based screen reader. Users can simply touch the screen to hear a description of the item under their finger, then double-tap, drag, or flick to control their device.
All of the built-in views and controls can support VoiceOver automatically, and it's simple to incorporate VoiceOver compatibility in custom views using the accessibilityLabel property. Get all the details on how to add accessibility to your app by reading the Accessibility Programming Guide for iOS. For more details on how VoiceOver works, and other iOS accessibility features, visit the Accessibility webpage.