The Shot Sense module is a great idea but the app leaves something to be desired. When I try to save a session it will not allow me too, can’t change the information on the bow (poundage, model, let off). Mathews makes great bows and accessories but the app is a massive disappointment. Update: The app is also becoming glitching, randomly closing during a session and randomly dropping connection with the sensor. The app needs an update to address these issues