We reported earlier that SM Entertainment had partnered with Neowiz Bugs again to create an application for f(x) to tie in with their NU ABO promotions. After releasing the lite version last week, SM has now released the paid version which costs 4.99 USD. It is cheaper than the paid version of SNSD's Run Devil Run app but has noticeably lesser content. The application weighs in at 111mb and the only difference from the lite version is the full NU ABO music video and full audio tracks of their new album. You can search on the iTunes store by using the search term "NU ABO" or simply clicking on this link. But unless you are a hardcore fan, you might want to think twice about paying for this since there's nothing really new in this. So with f(x) completed, we can expect a Super Junior app soon!