Well, people normally get confused between these technical jargon’s. However, all three terms (i.e. Wifi Booster, Wifi Repeater and Wifi Extender) are used interchangeably, these devices are ultimately used to strengthen the range of wifi signals in your home or office dead zones.
Technically speaking there is a difference between wifi booster/wifi repeater and wifi extender in terms of their operations and usage.
WIFI Booster / WIFI Repeater are normally use to extend the range of wi-fi signals in office, shops or home. In-fact you can use wi-fi repeater to connect various device such as computer, laptop, mobile, IOT devices etc. even if they are not in range of actual wi-fi network. Wi-fi repeater are universal compatible devices that work with any service provider router. Also, they are secure, reliable and easy to set-up. WI-fi repeaters are excellet choice for home usage i.e. watching HD movies, playing online games etc.