I just thought that someone could make this work. I've read somewhere on apple website that iTunes has backup function for iPhone, which includes calendar, address etc... and ""Note"" app. So, can anyone find that backup file on Mac and make nice interface to write on that file so literally Mac and iPhone share Note app? And we can use iTunes' revert function to put the edited note back to iPhone? Doing that I don't think we have to hack on the iPhone side. But, I don't have enough skill to do this... So please share your knowledge !!