iPad interface design
[..] there is a reason I didn’t go into Weather apps on the iPad, it is just a much more difficult device to layout weather information on.
-- Ben Brooks
Not just weather apps information. I have no design skills at all, but I was able to write a functional iPhone app and put it on the app store by just putting the obvious information in the obvious place. There's little enough room that a lack of imagination doesn't matter so much.
All my efforts to port it to the iPad have been thwarted by the fact that I suddenly have a MILLION PIXELS TO FILL. The desktop version gets round this problem by just using a smaller window, but on the iPad you have to fill the screen, but not crowd the screen.