Mobile App "BAND" ~ CNBLUE FANS BAND

 

 

http://www.band.us/home

IOS

https://itunes.apple.com/app/id542613198?mt=8

Android

https://play.google.com/store/apps/details?id=com.nhn.android.band&hl=en

But all the posts are in Cantonese (not formal written Chinese)...