Do home hair loss devices really work?

Lately, I've been looking into various ways to care for my alopecia areata, and I see a lot of advertisements for home-use hair loss devices. In particular, I noticed the Growturn scalp care hair loss device. Do these home devices really work for hair loss that is already progressing? I don't mind any specific device; I'm curious about honest reviews from people who have actually used hair loss devices at home. Do they really work?