If you’re looking for an app to help improve your breathing, and help foster a sense of calm and relaxation, this is the app to go with. The user interface and the music are absolutely beautiful and help entrain the mind to relax, and breath more easily. The exercise tools help you to strengthen your lungs, so you can breathe better, more efficiently, and with much less effort. I have asthma, and also have a low red blood cell count, so breathing for me can really be hard at times, especially on exertion. And I have tried numerous apps to help with my condition, but this one works the best, it helps me to be more mindful, and reduce stress too. Big thumbs up.