AnyKeyboard is an application that allow users to custom your own keyboard. This is an application extension. It is easy to edit by yourself, because it has .xib file that you can add extra buttons that you want. The code is written in Objective-c and requires Xcode 6, support iPhone4s, 5, 5s, 6, 6 Plus, iPad and iOS 7, 8 to run. Support portrait device orientation.