If youre using iOS 5, try my new app Verses instead. (search the App Store for "verses notebook").
Verses has some additional dictionary features and is available now for iPhone, iPod touch, and iPad.
RhymeBook is a place to quickly jot down your lyric ideas. Just press a button to add a new page to your RhymeBook and start typing.
RhymeBook helps you write your lyrics by providing an easy-to-use rhyming dictionary. (Internet connection required). Just double tap a word you want to find a rhyme for, and tap the Rhymes button. RhymeBook provides a list of words and phrases that rhyme with your selection. Tap a word to insert it into your composition.
RhymeBook syncs with Dropbox, so all of your work is available on your computer when you get home. (Look for a folder called "RhymeBook" in your Dropbox).