Fortunately I've managed to somehow miss out on the Metro calculator app. It looks to suffer from the problems described here, only worse yet than existing calculator apps, on account of the size of all the Metro widgets compared to the size of the 21+" (non-touchable!) monitor sported by your average desktop PC: http://prog21.dadgum.com/107.html
I actually knocked up an image of my calculator (HP 50g) against my TFT screen both scaled accordingly as an illustration of this shit crock:
http://s16.postimg.org/qu05lh5r9/wtf.png