Heart Track Pro vs IntervalGuide

HeartTrackPro — Real-Time Heart Rate Monitor This app is intended for use in regions where the connected Polar hardware has received regulatory clearance, including the United States, European Union, and Canada. This app is not a medical device. Always consult a qualified physician before making any health or medical decisions. HeartTrackPro turns your iPhone into a professional heart rate monitoring station. Whether you're a serious athlete chasing peak performance or a fitness enthusiast tracking your training zones, HeartTrackPro gives you the live data, visual feedback, and session history you need — all in one clean, focused app. Polar H10 & Apple Watch Support Connect to a Polar H10 chest strap over Bluetooth for clinical-grade accuracy and real-time RR interval data, or use your paired Apple Watch via HealthKit for effortless, cable-free monitoring. Switch between devices in Settings at any time. Live Heart Rate Display See your current BPM in large, easy-to-read numerals the moment your device connects. A live connection status badge keeps you informed at a glance, and a sensor battery indicator means you're never caught off guard mid-session. RR Interval Tracking For Polar H10 users, HeartTrackPro captures RR interval data (the time between individual heartbeats in milliseconds) alongside BPM — ideal for heart rate variability analysis and deeper physiological insight. Live Chart with Adjustable Time Window Watch your heart rate trend unfold in a smooth, real-time line chart. Choose from seven time windows — 1, 5, 10, 20, 30, 45, or 60 minutes — to zoom in on an interval or review the full arc of a long workout. Average BPM, peak BPM, sample count, and a running session timer update live alongside the chart. 5 Training Zones HeartTrackPro automatically calculates your five training zones based on your maximum heart rate and highlights which zone you're currently in: • Zone 1 (50–60%) — Warm-up • Zone 2 (60–70%) — Fat Burn • Zone 3 (70–80%) — Aerobic • Zone 4 (80–90%) — Threshold • Zone 5 (90–100%) — Max Effort Set your max HR by entering your age (using the standard 220 − age formula) or enter a known value manually from a lab or field test. Pause & Resume Recording Life happens mid-workout. Pause a session without losing your data, then resume exactly where you left off. Full Session History Every completed session is saved locally on your device. Browse past recordings with session date, duration, device type, and a per-session HR zone breakdown so you can track how your training load changes over time. CSV Export (Pro) Export any session as a comma-separated values file to share with a coach, import into Excel or Numbers, or feed into your own analysis pipeline. Simple, Honest Pricing HeartTrackPro is free to try with up to 5 recorded sessions per device. After that, a single one-time purchase unlocks unlimited recordings, CSV export, and every feature added to the app in the future — no subscription, no renewal, no expiry. Privacy First All session data stays on your device. HeartTrackPro does not collect, transmit, or share any personal health information.

Your workout. Your rules. IntervalGuide is a fully customizable interval timer for HIIT, Tabata, boxing, and circuit training - built to work exactly the way you train. Design your interval workout block by block: set work and rest periods, add rounds, choose audio cues, and train in the right heart rate zone. Shake your iPhone to pause or resume - no need to touch the screen mid-round. Whether you're doing HIIT, boxing rounds, kettlebells, running intervals, or strength-training rest periods, IntervalGuide adapts to your routine, not the other way around. HANDS-FREE CONTROL Shake your iPhone to pause or resume - no need to remove your gloves, stop your set, or fumble with your screen. Perfect for boxing, kettlebells, winter runs, or any workout where touching your phone isn't an option. FULLY CUSTOMIZABLE TIMERS Build workouts your way: - Create unlimited interval blocks with custom durations - Set work, rest, and preparation phases - Add rounds and repeats to any block - Assign colors to visually distinguish each phase - Save and reuse your favorite workouts REAL-TIME HEART RATE Connect your heart rate monitor and train in the right zone: - Polar sensors supported out of the box - Generic Bluetooth Low Energy (BLE) heart rate devices - Live HR display during workouts - Customizable heart rate zones - Apple Health integration AUDIO & HAPTIC CUES Stay focused without watching your screen: - Voice announcements for phase changes - Boxing bell and other sound effects - Vibration alerts to keep you on track - Works with headphones and AirPods APPLE WATCH COMPANION Control your workout from your wrist: - Start, pause, and stop from your Apple Watch - See timer and heart rate at a glance - Full data sync between iPhone and watch WORKOUT HISTORY Track your progress over time: - Automatic session logging - Review past workouts with full details - Heart rate data for every session - Apple Health sync BUILT FOR REAL TRAINING No bloat, no social features, no accounts required. Just a powerful, reliable interval timer that runs in the foreground and never quits on you mid-workout. Works great for: - Boxing & MMA rounds - HIIT & Tabata - Strength training rest periods - Yoga & stretching flows - Running intervals - CrossFit-style WODs - Physical therapy exercises Download IntervalGuide and build the interval timer that fits your training - not someone else's. SUBSCRIPTION IntervalGuide Premium removes all ads, unlocks your full workout history with detailed session stats and HR charts, and lets you export sessions as CSV, Excel, JSON or Text. - IntervalGuide Premium: auto-renewing monthly subscription - Free for the first week for new subscribers, then the price shown in the app - Payment is charged to your Apple Account at confirmation of purchase - Renews automatically unless cancelled at least 24 hours before the end of the current period - Manage or cancel anytime in your Apple Account settings Terms of Use (EULA): https://tremia.app/apps/interval-guide/terms-of-service Privacy Policy: https://tremia.app/apps/interval-guide/privacy-policy