Pretty good practice – TapTyping - typing trainer suite Review

Very handy to keep yourself sharp, and saves so much time after you get your speed up. Good to update yourself with new iPhone (particularly from 4-series to 5-series) or if you get a new case that will certainly interfere with some aspect of typing. I disagree with using left thumb for "b" but generally very handy practice tool.
Review by Xmeromotu on TapTyping - typing trainer suite.