Creepy.

A creepy, baritone voice mutters "Breath in... Breath out..." over two hard-plucked guitar notes, over and over. This is supposed to be relaxing??? It sounds like a horror movie soundtrack written by Philip Glass. It might be forgivable if it was even instructing you how to breathe correctly, which it isnt. Do yourself a favor: take a couple of yoga classes, learn the basics of pranayama breath control, and toss your gadget aside for a few moments each day. You do not need an app to breathe well-- and certainly not this one.

Frankie Nerve about Breathing Zone Free - Relaxing Breathing Exercises