There are two versions of the BONAMANA application, a LITE which is free and the other one which requires you to pay 7.99 USD. You can search on the iTunes store by using the search term “BONAMANA” or simply clicking on this: LITE or PAID.
The LITE version which is 71.6mb is kind of fully featured in that it contains the teaser, MV and app intro videos, 30s audio track previews, photos and a clock. The PAID version is 208mb and I suppose it contains some exclusive content.
Credit : Allkpop