How long do you think it will take for you to know whether it's effective long term? Could you post an update then?
I'll try to. I doubt it will stop acting as an effective way to relax at some point, if that's what you're wondering. I think it's more likely that I'll forget to use it.
I actually did have a little bit of trouble early on 'cause it's really easy to bring yourself out of a relaxed state, which causes the tone to increase in pitch, and high-pitched tones aren't very relaxing (for me at least). So there's a bit of a downward spiral there, and it can get kinda frustrating if you get set back repeatedly this way. But this wasn't an issue on my most recent usage attempt.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.