Google Allo messaging app launches at I/O

A sneak peak of what the future holds for Android, Google's artificial intelligence pursuits, and virutal reality. Google announces messaging app Allo at I/O developer conference in Mountain View, Calif. Google debuted its new messaging app to rival Facebook Messenger at I/O, its annual software developers conference. The messaging app has a twist: It's not just for chatting with friends and family. You can ask Google questions the way you would a digital assistant such as Siri.