I'll admit that I used to play D&D back in the day, and thus I still have a bag of many different dice sitting in my closet somewhere. Almost everything you do in the game revolves around the rolling of one or more dice. With all of the modern marvels of today, we need not mess with an entire bag of primitive objects such as this, as we can simply download an application for our iPhone to accomplish the same task.

Dice Bag gives you several options for rolling, including some of the more complex rolls. Simply tap on the one you need, and it will produce a randomly-generated number. It would have been cool to see some sort of animation when you tapped the screen, but it's free, and it works.