Their translation notes for the NET version are extremely engaging. They open up so many paths of meditation and studying inside the Word of God that you will probably spend hours in one single passage (e.g.Heb 1:1-4 will keep you busy for a while). From a strictly technical point of view, the app will probably be a 3-4 star, but as a tool to use the Net translation on your iPad, its worth every penny (oops, sorry, I forgot it is free...thanks!) I also recommend the Blue Letter Bible, since I use the Strongs concordance a lot.
AppLickable about Touch Bible: Read, Study & Go, v2.1