FitnessTimer.io

FitnessTimer.io is a fast, flexible workout timer for HIIT, Tabata, circuits, and endurance intervals. Build precise work and rest blocks, follow clear cues during training, and track progress to stay consistent. Core features: - Custom interval builder with warm-up, work, rest, rounds, and cooldown, plus reusable templates. - Hands-free guidance with clear audio cues, large visual timers, and countdown beeps. - History and progress tracking to review completed sessions and reuse favorite setups. Ideal for home workouts, gym training, running, cycling, boxing, and team sports. Keywords: HIIT timer, interval timer, Tabata app, workout timer, health and fitness, sports training.