So a couple quick notes on what's happening with the iManga Reader right now.
Both the free and the paid version of the app have been approved for sale by Apple. Unfortunately we apparently still have a couple outstanding issues with VIZ Media to resolve. What this means for you, our beloved end user, is that you'll have to wait another couple weeks before you'll be able to download the latest paid version of the iManga Reader.
In the meantime, why don't you check out the free version of the iManga Reader instead.