Great for your Mac Laptop
I do a majority of my work on my laptop the only drawback is when I have to crunch numbers it takes longer due to the fact that it does not have a number pad. This app is a simple, cheap solution to this problem as it syncs to you laptop via wifi or Bluetooth for seemless number punching.
CraigDesmarais about
Number Pad - Wireless Numeric Keypad, Numpad and Mouse Trackpad