Referee: Match Timer & Whistle

Referee: Match Timer & Whistle is a professional sports officiating companion designed for soccer, futsal, basketball, and amateur sports referees and coaches.

Key Features:
- Match Stopwatch & Countdown: Accurately track halves, quarters, and stoppage injury time with clear visual indicators.
- Instant Electronic Whistle: Loud acoustic whistle sirens with tactical burst modes and synchronized haptic vibration pulses.
- Fullscreen Disciplinary Cards: Instantly raise Yellow Card, Red Card, or Green Card with full-brightness display.
- Match Event Log: Record goals, cards, and timeouts directly during match flow with offline local persistence.
- Multi-Sport Presets: Quickly select between Soccer (45m/45m), Futsal (20m/20m), Basketball (10m/12m quarters), or custom periods.
- 100% Offline: Zero internet required on the pitch, preserving battery throughout the tournament.

Privacy Policy:
https://hoanganhphan91.github.io/hoanganhphan91/