As mentioned earlier, a WiFi repeater is sort of like a first-generation WiFi extender, but while they offer similar purposes, the two work very differently. A WiFi repeater rebroadcasts your wireless internet to extend the range the router originally had. However, a WiFi extender uses a wired connection to pair up to your router directly, and creates an entirely new network. In terms of which is better, you might find that the wired connection of a WiFi extender offers you faster internet speeds. So, if speed is your priority, go for an extender.