What Would Make a Great Smartphone App for Study Abroad?

I was thinking the other day about smart phone applications and the international educational experience.  Specifically, I wonder what features would be essential for a "study abroad" smart phone app?  There are certainly enough individual apps (most free) that make travel, living and studying easier.  What, in your opinion, would make a great study abroad app?

Some time ago, Abroad 101 put together a Top 10 iPhone Apps for the Student Abroad list and Study Abroad Blog - GIC Argentina put together a 15 iPad Apps for the Study Abroad Student list Additionally, the internationalstudent.com blog is available as an iPhone app and that is how I access this blog (get it here).