I have downloaded the new app on iPhone 4 and iPad 2 a number of times over the last 48 hours. The demo does not work and the writing does not work (when I try to write "ni" for example absolutely nothing happens--no black ink or any other response). I have never used skritter before so it may be possible that I am doing something wrong but not likely. The only reason I have made it this far without throwing iPhone against the wall is because of sinosplice recommendation, but slowly losing patience. Any suggestions?