PenaltyTimer is a specialized mobile application designed for roller derby officials, enhancing the penalty management experience. This app stands out by addressing the common issues faced with traditional stopwatches, offering a reliable solution that incorporates the WFTDA ruleset for effective tracking of penalties during games. It is particularly beneficial for leagues globally, ensuring accurate management of penalty situations, even when staff is limited during practice sessions.

The app features a versatile configuration capability, allowing users to manage various setups such as two blockers or full penalty boxes. Key functionalities include simultaneous timer stoppage between jams, a 10-second warning alert, and a tap-edit feature for quick adjustments. Additionally, PenaltyTimer offers customizable colors for team uniforms, Retina display support, and localization in eight languages, making it a comprehensive tool for roller derby officials.