iPad - To manage your Boom Buddies on the iPad you need to do the following:
Click on the 3 lines in the top right hand corner of the screen. Select 'Social'. You will then be able to add a Buddy, accept requests and view all of your Boom Buddies.
iPhone - To access your Buddy List on iPhone, when you are on the 'Social' tab, you need to swipe left to access the Manage Buddies tab.