Notice, of course, that it was developed for CJK input... for which it makes more sense than any conceivable alternative on those machines. (Since the iTouch doesn't have a mic for speech transcription.)

It appears that you write a word at a time, not a letter at a time... so it is somewhat different, and I'm not at all sure which approach is better. But I know a stylus is better for legible writing than a BFF. So if you have an iThing, get this. (I think it'll work; it's designed for laptop capacitive touchpads.)