Jamzo

Jamzo is an app built for roller derby. – Dedicated tools for different NSO roles Jamzo provides separate tools for the key officiating roles in roller derby: * Penalty Box (Penalty Timer) * Blocker Timer: track 30-second penalties for blockers * Jammer Timer: manage jammer penalties with precision * Dual Timer: handle both roles on a single screen * Scorekeeper: record and manage game scores directly from your device – Game Timing * Jam Timer: manage the flow of a roller derby game (jams, intervals, timing) – New: Teams Directory Access a complete list of roller derby teams with essential information: * City and country * Social media links A simple way to explore and connect with the roller derby community. – Built for real game conditions * Fast and intuitive controls * Clear, glanceable interface under pressure * Designed to reduce stress during games and scrimmages – Learn the rules with Quiz mode * Test your knowledge of roller derby rules * Multiple difficulty levels * Ideal for NSOs, referees, and players * Learn while practicing – New: Scorekeeper Tool * A dedicated scorekeeping solution designed for roller derby games: * Track scores throughout the game * Record each jam quickly and accurately * Simple interface optimized for NSOs * Reduce paperwork and keep game information organized