Typeeto - Use Mac’s keyboard to type on iPad, iPhone, Android, etc.
TypingMaster - Learn touch-typing technique, and improve/increase typing accuracy and speed.
1keyboard - Type on your iPhone, iPad or AppleTV using your Mac keyboard
amphetype - Advanced typing practice program
KeyWi - Use your computer's keyboard to type on your iPhone or iPad
Type Fu - Type Fu is an app that will teach you how to type fast. The right way. On Mac, Windows and Chrome OS.