A must-have app if you have chromecast dongles. – Google Home Review

A must-have app if you have Chromecast "dongles" around the house. It lets you control any Chromecast dongle around the house through this app even if you don't have the app for the app or website that the dongle is playing currently. For example, let's say that a dongle is playing a station from iheartradio and you want to turn it off (or just adjust the volume) but the device that you are currently using does not have the iheartradio app. well, this app will let you do it. It will let you control any dongle and any content currently playing on any of them (on the same Wi-Fi network). I love it!
Review by iluvappleniphones on Google Home.