The sound of this little box is great and it is super tweakable. You get the bonus of a compressor, a delay and a plate reverb in one pedal. Now, the app does not live up to the expectations and bluetooth connectivity is unstable (if you get to connect). In pedals such as Dream or others, the app is not that necessary. In this pedal, many functions and tweaks need tha app. Please UA fix the bluetooth issue. Also, provide a PC/Mac app as you do with the big brother ox box.