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1.0
HIIT interval timer with custom rounds, work and rest phases, vibration alerts.
Fierce Burn Cycle is an interval training timer built for people who take their workouts seriously. No fluff, no accounts, no subscriptions — just a clean, focused tool that keeps you moving. Set the number of rounds, choose your work duration and rest period, and let the timer guide you through each phase. Vibration alerts signal every transition so you can stay focused on your form instead of watching a screen. Everything runs locally on your device. No internet connection needed, no data leaves your phone. Key features: - Fully customizable rounds, work time, and rest time - Vibration feedback at every phase transition - Clear visual display of current phase and remaining time - Compact, card, and grid view modes available in settings - 12h and 24h time format options - Offline-only, no account required Whether you are running sprints, doing bodyweight circuits, or working through a kettlebell routine, Fierce Burn Cycle keeps the structure tight so you can push harder.