Dice Cups

Dice Cups is a dice rolling simulator for role-playing fantasy games like Dungeons and Dragons or Pathfinder. You can use multiple cups for different sets of dice to represent different characters, situations, etc. You can add clean empty cups, or copy an existing cup to modify it's dice and target.
You can set a target number with less-than, greater-than or equal-to targets to see the odds of success before you roll.
Rolling the cup shows the grand total and indicates success or failure to match the target.
The standard dice (d4, d6, d8, d10, d12, d20) are pre-designed.
The dice are completely customizable, including number of sides (1-100), and the values of each individual side. You can also create short-cut buttons to save and re-use customized dice after they have been removed from the cup.