As much work and dedication that Apple engineers have put into accessibility and UD in iOS and OS X and even AppleTV many developers never take advantage of the accessibility API’s.
You probably know that Apple’s range of iOS devices comes with a built-in screen reader called VoiceOver. What you may not be aware of, though, is just how easy it is to make your apps accessible.
When VoiceOver is enabled, the basic gesture set changes. For example, a single tap highlights an item and speaks its name, and a double one opens or activates the item.
If you haven’t used VoiceOver before, it’s worth taking a little time to play around with it. To turn it on, tap Settings > General > Accessibility > VoiceOver. You can assign VoiceOver to a triple-click of the Home button, which makes it easier to turn on and off. Just enable the option from Settings > General > Accessibility. Apple has some helpful advice on getting started at support.apple.com/kb/HT3598.