Yeah it’s just a distraction like playing music/water sounds or getting tickled. Honestly, I’ve put an electric massager to my neck/head and the hum relieves the tinnitus pitch a bit. It seems like this is the tongue-version of that, but since it isn’t as loud they’re pairing it with some sound relief.

A neat idea, I’m glad that it helps people who can afford it. Hopefully it can be priced more reasonably in the future. In the meantime I will have to keep my headphones handy! lol