Question about the new NCL App

[VideoTech]

DW and I are cruising on the Dawn over the holidays. It's been a while since our last cruise, and during that cruise we used the old iConcierge app. 

 

I've downloaded the new NCL app, and the first page (login/register) looks a lot like the page where you sign into NCL's website to view your cruise. So the question is, do we each sign in separately (separate user names and so on) or do we both use the same sign on as we would use to manage our cruise on the NCL website? 

 

Thanks in advance!