RollTimer: The Professional Jam Timer for Roller Derby Officials
Designed specifically for the jam-timer position, RollTimer eliminates the need for traditional stopwatches and provides precise timing control for all roller derby formats. Whether you're officiating WFTDA sanctioned bouts, RDCL tournaments, or OSDA games, RollTimer has the configuration you need.

Key Features:
Built-in Game Configurations
WFTDA standard timing rules
RDCL tournament settings
OSDA game format
Custom configurations for scrimmages and special events

Professional Timing Control
Precise jam timing with lead jammer call-off
Period clock management
Lineup time tracking
Team and official timeout timers
Automatic vibration warnings at configurable intervals

Designed for Officials
Large buttons for one-handed operation
Clear, high-contrast display visible from across the track
Haptic feedback for critical timing events
Works completely offline - no internet required

Game Management
Track team scores and timeouts
Monitor official reviews remaining
Complete game history and statistics
Export game data for league records

Perfect for:
NSO jam timers at sanctioned bouts
Tournament directors managing multiple games
League officials during practice scrimmages
Coaches timing drills and scenarios
Referees needing backup timing

Why Choose RollTimer:
Unlike generic stopwatch apps, RollTimer understands roller derby. Every feature is built around the specific needs of derby timing, from the 30-second lineup to the 2-minute jam clock. The large, accessible interface ensures you can focus on the game, not fumbling with tiny buttons.
Trusted by officials across leagues worldwide, RollTimer brings professional-grade timing to your mobile device. Download now and experience the difference purpose-built software makes.

Offline Operation:
RollTimer works completely offline with no network requirements, perfect for venues with poor connectivity. All game data is stored locally on your device for maximum reliability.