Pacelet is a simple Apple Watch walking companion for 3-minute easy and 5-minute fast walking intervals. Start a walking workout, follow the current pace on your wrist, and get a haptic cue when it is time to switch. Optional spoken cues can say "Walk easy" or "Walk fast" when you want audio guidance. Pacelet uses HealthKit to run a walking workout, show live walk metrics, and save completed sessions to Health and Fitness. Features: - 3-minute easy pace and 5-minute fast pace intervals - Haptic pace-change cues on Apple Watch - Optional spoken pace announcements - Walking workout tracking with HealthKit - Live heart rate, distance, and elapsed time - End-of-walk summary with distance, heart rate, active energy, and completed rounds Pacelet does not provide medical advice or diagnose, treat, or prevent any condition.