Love this app!
I use this app all the time. I like being able to mix and match sounds and change the volume of each to create just the right sound mix for my mood. On my computer, I use this app with headphones to help me concentrate in a noisy environment, or to help me relax when I am getting stressed out about a task. On my iPhone, I have used this app for years to help me meditate, relax, study, or sleep. For me, this is a must-have application.
MacAdk about
Relax Melodies: Sleep Sounds, v1.0