Thanks to all who replied to my prevoius thread about iPods, iPads etc. I've now taken the plunge and last night bought an iPod touch! Skritter was the first app I downloaded :)
I have a train journey today, so it will be a useful test. I'll let you know how I get on.
One thing - on the web application I can type the pinyin, and I find this helps me to remember it. On the app I don't seem able to do that - is that right, or have I missed a setting?