Breathing Zone - Relaxing Breathing Exercises is a program for Mac that was created to help users with anxiety and stress problems. All you need to do is breath in and out according to the guide and you'll immediately improve your mood and heart rate.
The application comes with an integrated audio player that brings Play and Resume buttons. You can also access the Preferences menu from the app's main window (the gear icon) and configure the app's settings according to your needs.
The utility allows you to choose the preferred speed for the breathing exercise, adjust the noise volume, and select the notification sound. You can also toggle fullscreen mode if you wish to hide everything else from your screen and focus on your breathing exercise.
Another advantage is the fact that the app features an integrated quick start guide that teaches you how to work with this program.
Cutting a long story short, I'd say you should buy this application if you're dealing with anxiety or stress issues. This utility is very simple to handle, offers you a comprehensive help guide, and comes with a fair price.