Yes, you do need a plan for Google Wifi. It is important to have a plan in place so that you can properly set up and manage your network. Depending on the size of your home or business, there are different options available, such as choosing between single-band and dual-band routers, setting up guest networks and adjusting parental controls. Additionally, having a solid plan helps ensure maximum performance from your devices by avoiding interference with other wireless signals or overloading your bandwidth with too many connected devices. With proper planning, you can make sure that Google Wifi runs smoothly from day one!