Interval Timer vs Harlen

Interval Timer — HIIT & Tabata Workout Timer Transform your training with the ultimate Interval Timer for HIIT, Tabata, and circuit workouts. Whether you're crushing a 4-minute Tabata session or powering through multi-set circuits, this precision timer keeps you focused and on track. Large countdown display, smart audio cues, and customizable intervals — everything you need for intense training sessions. BUILT-IN PRESETS • Tabata — Classic 20s work / 10s rest, 8 rounds • HIIT 30/30 — Balanced 30s intervals, 10 rounds CUSTOM WORKOUTS Create unlimited workout templates tailored to your training: • Work intervals: 5–300 seconds • Rest intervals: 5–300 seconds • Rounds: 1–50 • Sets: 1–10 with configurable set breaks • Optional preparation and cooldown phases SMART FEEDBACK • Sound alerts — Different tones for work vs. rest • Haptic feedback — Feel interval changes without looking • Countdown beeps — 3-2-1 audio cues before transitions • Fully customizable — toggle each notification type independently TIMER FEATURES • Large, readable countdown with circular progress indicator • Play/Pause control for mid-workout breaks • Skip forward/backward to adjust on the fly • Keep screen on during workouts • Real-time round and set tracking TRACK YOUR PROGRESS • Complete workout history • Session statistics — completed vs. abandoned workouts • Total training time tracking • Filter by week, month, year, or all time PERFECT FOR • HIIT training • Tabata protocols • Circuit timer sessions • Boxing/MMA rounds • CrossFit WODs • Bodyweight circuits • Strength training supersets Simple. Powerful. Distraction-free. A professional-grade Interval Timer built for athletes who demand precision.

The app lets athletes securely link with their coach, grant permission for wearable and health data access, and keep their latest metrics available to their coach’s dashboard. Once connected, athletes can view their coach link, wearable connection status, and recent data such as resting heart rate, sleep, and steps. Harlen is intentionally simple: the coaching workflow happens on the coach’s web dashboard, while the mobile app helps athletes connect their account, manage consent, sync wearable data, contact support, and control their account. Harlen is not a medical device and does not provide medical advice, diagnosis, treatment, or medical decision-making guidance. The information and recommendations provided by Harlen are intended for informational and wellness purposes only. Always consult a physician or other qualified healthcare professional, in addition to using Harlen, before making medical decisions or changing any treatment, health, fitness, or recovery plan. Never disregard, avoid, or delay seeking professional medical advice because of information provided by this app.