Dungeoneer's Dice is a dice rolling app for your gaming and rpg needs. It handles both standard RPG dice (with 4, 6, 8, 10, 12, 20 sides), "exploding" versions (when you roll the max value you get to roll again and add the result), and a few common groups of dice (d100, 2d6, 3d6, 2d4... hopefully more coming soon plus the ability to add custom groups).