Google Reportedly Launching Allo Messaging App Sept. 21. Your messaging app is about to get smarter. Allo will use machine learning to give users a richer messaging experience. Now, you will be able to respond to text messages with a click, and Allo will learn your contacts and habits on its own. We will leave the issue of Google getting in your head for another time. For now, this will be very cool. The app expands on the phone's voice control capabilities. We are all growing used to talking to our phones, and my favorite phrase is "OK Google". Google Assistant goes a long way towards the SciFi future in which we tell our computers what we want to do, and they respond. Brave new world.