I know they are working on an AM app for the iphone. Not sure of the details and if it will be apple approved or 3rd party. In the mean time you can access the diest tracker and input data vi the iphone. I can't get flash on my iphone so I just click no for the couple of pop ups and then I'm in. I can't see the graph, but it's only temp any since I'm on my phone.
And it probably would have been best in the general forum or if you go to the "groups" page their is an iphone group run by the administrators.