On the same day that President Obama and Facebook CEO Mark Zuckerberg participated in a town hall public meeting discussing a wide range of national and technological issues, the White House updated its popular iOS app and launched a new Android app in the Android Market. Both versions offer roughly equivalent feature sets, and new features include a push messaging option, an updated photo gallery and social-network sharing capabilities for blog posts and videos, the latter of which -- like today's town hall -- can also be watched live in the apps.