Comment by huhtenberg

Here's how it looks on iPhone4 - http://i.imgur.com/olj9ocC.png - lots of wasted space and a messy header.

For the header, I'd consider splitting it into two lines, like this - http://i.imgur.com/7EAROA8.png. That is, keep top line for user-specific items, and put the rest in the bottom line. This also means moving "submit" to the top and hiding it when a user is not logged in.