From CNET.com…..
If you dig around in the Google Home ecosystem for long enough, you’ll discover the Google Home app alone doesn’t do everything you need it to. Tons of great features require you to download even more Google apps, like Google Assistant and even Gmail, but there’s nothing in the Google Home app to let you know that.
To make matters more confusing, there are some apps you might think you need but either, one, you really don’t or, two, you do, just not for the reason you think. Rest assured; I’m going to sort it all out for you.