I am the designer of EdenGraph, and of the various Edenwaith products available, EdenGraph is the one which has the most promise to be ported over to the iPhone. There is currently no work being done on it at the moment, but it certainly is being considered. If there are any developers who would be interested in helping port EdenGraph over to the iPhone, please let me know. You can go to Edenwaith's website and go to the contact area to send an e-mail.
Edenwaith : Support