In many ways I love this app. I love the coaching. I love that the workouts are interesting and varied and always challenge me. I love that there is a broad selection of music. Heres what drives me nuts and has me considering deleting the app: for the love of Lothar of the Hill People, please, coaches, do NOT sing along with the songs. You are personal trainers, not professional singers, and the sound blend is such that the voice over is FAR louder than the soundtrack. Also, I am getting far too used to the sound of Rochelles dog barking. Which is distracting, and feels like it is distracting her. And then when I think I have the volume blend right to hear the music without the motivational instructions getting too loud, a coach yells "Yahoooo!" and my eardrums start to bleed. This app is ALMOST great. It is so close to being great. The concept is sound. But people maybe need to not be recording their coaching at their home PCs with their dogs and phones and Cheerios, and without any professional blending equipment to make sure that the voice overs dont singe your earbuds while the music is a tinny memory. Tighten up, folks, and this will be a great app. But if I get one more outdoor running workout where a coach sings half of the song lyrics and lets her dog bark for two songs, Ima probably delete the app.