This is one seriously powerful app. It also works on most Android devices. You simply download the app and then enable it. From there, you can ask it whatever you want. It also supports a variety of commands. You can control lights, ask about population control, and it can even do simple math problems for you. There are a variety of products like Google, Bose QC II Bluetooth headphones, Home and Chromecast that extent the functionality even further. There is also a second Google Assistant app for those who want a quick launch icon on the home screen. The hardware stuff costs money, but Google Assistant is free. Amazon Alexa is another excellent app in this space, but it doesn’t support Google Android quite as much as we would like, yet.