Here is a recent update from Cregle:
Re: delay issue
The inking delay results from either app algorithm or iPad models. iPad 2 is much powerful than iPad 1, so the inking delay will have less effect in iPad 2. We are aware of the delay issue in Ghostwriter Notes. Ghostwriter told us they will fix this issue in the coming release. If you have further questions, you can reach them at:
support@majorspot.com . Their support will help you to use iPen in their app.
Every app has different inking algorithm with its pro and con. We had tested Noteshelf beta as shown in the following video. The inking delay can almost be ignored. Noteshelf iPen version will come out this month.
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I know exactly the problem in that video... the person who clicked on the calibration dot had their pen straight up and down... and therefore when he writes with it the point is off.... I did the same thing several times... until I learned to hold the pen in my "writing position" and then the dot is correct when you write with it. Notice how he ends up holding the pen straight up and down in the end of the video and the track is correct.
