Resizing and repositioning the crop window could be more responsive. I sometimes have to drag and excessive distance for the app to recognize I am trying to nudge the crop frame over a tiny bit. Same goes for resizing the crop window. It would be tremendously helpful if we could have either 1) a nudge interface to reposition the cropped frame at a micro level, or 2) adjust the sensitivity of the initial touch recognition to require less initial distance or acceleration for the crop frame to move. Heck, maybe even a second level reposition UI that automatically kicks in when moving the crop frame minutely in place — reducing the sensitivity at which it moves, thus allowing for micro adjustments to the crop.