Audyssey Media Player app for iphones is free today!
Pretty cool app that's similar to accudio. It downloads preset EQ settings for your headphones but you can tweak it more than accudio.
I haven't played with it too much but so far it has settings for nearly all my headphones and sounds really good.
Thanks! The only headphones I have that are on their list are the MEElec M6 and that preset sounds pretty bad to my ears, but I downloaded anyways for when I buy other headphones or they add my other headphones to the list.