Looks awesome, it's well explained on the site, the icon is gorgeous (though it instantly reminded me of Procreate --- might want to check that), the UI is sufficiently "next-generation" (part flat + part iOS 6 = iOS 7?).
However I don't understand the rhyme drag&drop interface. Is it a mere reminder of how poetry & rhymes work? Or is it supposed to reorganize my verses at the same time (cause it doesn't)?