sleep² sleeptracker & analysis vs Combi Fit Track

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Is your fitness wearable actually tracking your heart rate correctly? CombiFitTrack lets you find out. CombiFitTrack is a real-time heart rate comparison tool that connects to multiple fitness devices simultaneously — Whoop, Apple Watch and Polar H10 chest strap — so you can see exactly how each one performs during your workouts. COMPARE HEART RATE FROM 3 DEVICES Connect your Whoop band, Apple Watch and Polar H10 at the same time. See live BPM from each device side by side on one screen. Choose to track from a single source or use the average of all connected devices. FULLSCREEN GYM DISPLAY Giant heart rate display designed to be visible from across the gym. Tap to switch between Whoop, Watch and Polar as your active source. Perfect for keeping an eye on your BPM during intense sessions. COOLDOWN COUNTDOWN Start a 2-minute cooldown timer at the end of your workout. The app automatically stops and saves when the countdown finishes, giving you accurate recovery data without having to remember to stop manually. HEART RATE RECOVERY ANALYSIS After every workout, CombiFitTrack analyses your heart rate recovery (HRR). See your HRR1 (1-minute drop) and HRR2 (2-minute drop), peak and recovered BPM, and get a rating from Excellent to Poor based on medical benchmarks. CALORIE TRACKING Automatic calorie calculation using watts-based, HR-based (Keytel et al.), or MET formulas depending on available data. Tap the info button to see exactly how your calories were calculated. 30+ ACTIVITY TYPES Choose from running, cycling, swimming, rowing, weightlifting, boxing, yoga and many more. Track which body position each device was worn on for every workout. CUSTOMISE YOUR LOOK Pick any accent colour with the colour picker or choose from quick presets. 6 background styles: Rainbow, Stripes, Diagonal, Bubbles, Waves and Solid. Adjust background brightness with the slider. All styles sync to your Apple Watch. APPLE WATCH COMPANION Dedicated Watch app tracks your heart rate independently. Synced themes and accent colours. The Watch keeps tracking even after you stop on iPhone — no need to restart. WORKOUT HISTORY & EXPORT Review all past workouts with detailed charts showing HR data from every device. Export workout data as JSON for analysis. Recalculate calories using different HR sources. LIVE ACTIVITY See your heart rate on your Lock Screen during workouts with the Live Activity widget. Stays updated even when the app is in the background. PRIVACY FIRST All data stays on your device. Optional Apple Health integration to save workouts. No accounts, no cloud, no tracking.