Very similar to Stresseraser
Ive been using a Stresseraser for years to help dial in my breathing and control stress- this is almost dead on with that device for feedback and resulting reduction in stress.
I paid almost $300 for my first Stresseraser, this app gives more feedback and had a better interface!
Multipleshotsfired about
Stress Doctor by Azumio - Stress reducer and slow breathing yoga exercise