D20 is a free dice application designed specifically for table-top role-playing games, available on the iPhone platform. The app focuses on providing a streamlined and simple interface for users, ensuring that rolling dice is quick and efficient. It caters to the needs of both novice and experienced players, making it an essential tool for any RPG session.

The application allows users to roll various types of dice, which is crucial for gameplay in many role-playing scenarios. By eliminating the need for physical dice, D20 enhances convenience and accessibility, making it easier for players to engage in their favorite games without interruptions. Overall, D20 serves as a practical utility for enhancing the tabletop gaming experience.