Find your inner peace with Serenity Breathing Exercise. Serenity Breathing Exercise is a mindfulness app designed to help you relax and de-stress. With guided breathing exercises and soothing soundscapes, our app provides a calming oasis in your busy day. Reduce anxiety, improve sleep, and increase focus with just a few minutes of daily practice.. Whether youre a seasoned meditator or new to mindfulness, our app has something for everyone.