Jamzo vs JamReady

Jamzo brings together essential tools to support teams and officials during roller derby games. NEW — LINEUP & PENALTY TRACKER Easily track lineups and penalties throughout the game: • Record the skaters participating in each jam • Identify jammers, pivots, and blockers • Assign penalties and track Penalty Box visits • View the game history in real time • Work independently or with another operator on separate devices • Access a complete game recap • Export game data for review or archiving SCOREKEEPER • Record the score jam by jam • Follow the game’s progress in real time • Choose between solo and dual modes • View and export the game recap TIMING TOOLS • Jam Timer: track jams, intervals, and periods • Penalty Timer: time Penalty Box visits • Blocker Timer: manage blocker penalties • Jammer Timer: manage jammer penalties • Dual Timer: use two timers on a single screen TEAM DIRECTORY • Discover roller derby teams • View their city and country • Access their social media pages RULES QUIZ • Test your roller derby knowledge • Choose your difficulty level • Learn and review the rules in a fun way Jamzo features a clear, responsive interface designed to remain easy to use in real game conditions.

JamReady is a roller derby game control app for running jams, lineups, periods, and timeouts. It is designed to keep core bout operations clear and quick, whether you are using it in local mode or connecting to the community-standard CRG Scoreboard. A key feature of JamReady is vibration alerts, both for on-device games & when connected to a remote scoreboard. Instead of relying only on visual cues, the app provides haptic feedback at important timing thresholds (including end-of-clock situations), helping operators stay aware while multitasking during live gameplay. Features: - Controls for start jam, stop jam, timeout, and undo - Clock displays for lineup, jam, period, and intermission - Built-in vibration alerts for critical timing transitions - Local/offline mode - Remote mode compatible with CRG Scoreboard - Team panels with timeout and official review tracking - QR code support for remote setup JamReady was developed with support from the 501(c)(3) organizations Seattle Derby Brats and Rainier Roller Riot. Special thanks to both organizations for testing. Disclaimer: JamReady is an independent app and is not officially affiliated with the CRG Scoreboard project.