Heart-rate monitoring is now the baseline for modern fitness trackers — but not all heart monitors are created equal. Some devices prioritise 24/7 resting heart-rate and sleep tracking, others focus on accuracy for interval training, and a few are subscription-driven platforms that turn continuous heart-rate and HRV (heart rate variability) into recovery coaching.
This review compares the best fitness trackers with heart monitors on the market in 2025 — spanning premium smartwatches, compact trackers and recovery-first bands — and finishes with a practical buying guide so you can choose the right heart-monitoring tracker for your goals.
How to Choose the Best Fitness Tracker With a Heart Monitor
Sensor type & accuracy
Optical heart-rate sensors (PPG) are the standard for wrist wearables. They’re great for resting HR, daily tracking and many workouts, but chest straps (ANT+/Bluetooth) are still the gold standard for peak accuracy during high-intensity intervals.
If you want the convenience of wrist wear with the best possible HR accuracy for training, choose a device known for strong sensor algorithms (e.g., Garmin/Polar/Apple) — or pair wrist tracking with a chest strap for serious interval work.
What you want to measure (resting HR, HRV, ECG, SpO2)
- Resting HR & sleep: almost all trackers do this well.
- HRV & recovery: WHOOP, Oura and some Polar/Garmin features focus on HRV.
- ECG for atrial fibrillation screening: Apple Watch includes ECG; a few others offer medical-style readings.
Battery life and wearability
If you want 24/7 tracking with minimal charging, look for fitness trackers that can last for days on a single charge.
Ecosystem and app experience
Data is only useful if you can interpret it. Fitbit and Garmin have robust apps, Apple Health is excellent for iPhone users, Polar focuses on training insights, and WHOOP places data in a subscription coaching context. Check the app’s usability and whether advanced metrics require a paid tier.
Sports & training features
Runners, cyclists and swimmers should prioritise GPS accuracy, interval/structured workouts and training load metrics. If you need coached plans and deep performance metrics, choose a sports-focused brand.
Price vs subscription trade-offs
Some devices are cheaper upfront but lock features behind a subscription (Fitbit Premium, WHOOP membership). Consider long-term costs.
Comfort & durability
You’ll get the best continuous HR data when the device is worn snugly and comfortably. Bands, water resistance and ruggedness matter if you train hard or wear the tracker to bed.
Compatibility
Make sure the device pairs with your phone and apps. Apple Watch is best for iPhone, Fitbit and Garmin are more cross-platform.
Best Fitness trackers with Heart Monitors
Apple Watch Series 9
Apple’s Watch Series 9 remains the go-to for people who want the best all-round smartwatch and highly capable heart monitoring. It combines a bright always-on OLED display, optical heart-rate sensor, electrical heart sensor for ECG, on-device processing for health features (e.g., arrhythmia detection), and seamless iPhone integration. It’s designed to be a daily driver: calls, music, maps, plus deep fitness metrics and recovery data.
Key features
- Optical heart rate (continuous monitoring) plus electrical sensor for ECG.
- On-device watchOS apps and third-party fitness apps.
- Built-in GPS, workouts with automatic detection and rich metrics.
- Advanced health alerts (high/low heart rate, irregular rhythm notifications).
- Premium display and build; deep iPhone ecosystem.
Pros
- Industry-leading integration of health, apps and notifications.
- ECG support and reliable on-wrist heart-rate monitoring for casual and interval workouts.
- Great software, third-party app support and easy setup for iPhone users.
Cons
- Battery life is typically 18–36 hours depending on use — shorter than many dedicated trackers.
- Expensive compared with simple trackers.
- Best features require an iPhone (limited functionality on Android).
Why choose it: If you want top-tier health features, ECG and a full smartwatch experience (and you use an iPhone), Series 9 is the most capable daily wearable.
Fitbit Charge 6
Fitbit’s Charge line has long been the benchmark for slim, daily fitness bands. The Charge 6 upgrades sensors and software to deliver improved continuous heart-rate, sleep staging and workout detection, while adding smart features like Map/Wallet integrations and music controls. It’s a compact tracker for people who care most about fitness metrics without paying for a full smartwatch.
Key features
- Continuous optical heart-rate monitoring and improved sensor algorithms.
- Sleep score, SpO2 tracking and stress/readiness insights.
- Built-in GPS (or connected GPS depending on model) and automatic activity detection.
- Long battery life compared with smartwatches (multiple days).
Pros
- Excellent value: strong fitness features in a compact, affordable package.
- Reliable sleep and resting heart-rate tracking.
- Comfortable for 24/7 wear; good battery life compared with full smartwatches.
Cons
- Less advanced workout metrics than multisport-focused devices.
- Some advanced insights may require Fitbit Premium (subscription).
- Build and display are more basic than premium smartwatches.
Why choose it: If you want accurate day-to-day heart tracking and sleep metrics in a small form factor without a huge price tag.
Oura Ring 4
The Oura Ring 4 is a standout in the realm of fitness trackers, renowned for its sleek design and comprehensive tracking capabilities. The Oura Ring 4 excels with its combination of style and functionality, making it ideal for those who prioritize comprehensive health insights without compromising on aesthetics.
Its ability to adapt to the wearer ensures personalized health monitoring, while the long battery life and wide compatibility with health apps make it a versatile choice for many. Whether you’re focused on fitness, wellness, or daily health management, the Oura Ring 4 provides an unmatched blend of technology and convenience.
Key Features:
- Biometric Tracking: Monitors over 30 biometrics including sleep, activity, stress, heart health, and women’s health.
- Smart Sensing Technology: Adapts seamlessly to provide accurate, continuous data day and night.
- Heart Rate Monitoring: Offers insights into heart rate variability and resting heart rate, aiding in stress and recovery management.
- Battery Life: Offers up to 8 days of performance without recharging.
- Design: Features no screens or vibrations, delivering an unobtrusive experience.
- Compatibility: Compatible with iOS and Android; integrates with over 40 apps including Apple Health, Google Health Connect, and Strava.
Pros:
- Holistic Health Insight: Comprehensive tracking across a range of biometrics.
- Elegant and Discreet: Stealth design suitable for any occasion.
- Comfortable Fit: Unique sizing ensures a tailored and comfortable experience.
- Extended Battery Life: Reduces the hassle of frequent charging.
Cons:
- Sizing Requirement: Unique sizing may require adaptation and could be inconvenient.
- No On-Device Display: No screen for instant visual feedback.
Garmin Vivosmart 5
The Vivosmart 5 is Garmin’s answer for users who want a simple, low-profile band with strong health monitoring (resting HR, all-day stress and energy tracking) and multi-day battery life. Garmin leans on sensible fitness features and excellent battery optimisation rather than flashy displays. It’s ideal for someone who wants to track health metrics without carrying a full smartwatch.
Key features
Optical heart-rate sensor with 24/7 tracking and activity detection.
- Stress tracking, “Body Battery” energy score and sleep monitoring.
- Very long battery life (multiple days to a week depending on settings).
- Lightweight, slim form factor.
Pros
- Comfortable and discreet; great battery life.
- Useful health analytics (energy/stress) for everyday wellness.
- Garmin’s app ecosystem and robust data export options.
Cons
- Limited on-device training/workout features compared to Garmins that target athletes.
- Small display and simplified interface — not for those who want rich on-watch coaching.
- Fewer third-party apps and smartwatch features.
Why choose it: If you value a slim tracker with excellent battery life and solid heart-rate + wellness tracking without the bulk of a smartwatch.
Frontier X2 Smart Heart Rate Monitor Chest Strap
The Frontier X2 Smart Heart Rate Monitor is a cutting-edge tool designed for athletes and fitness enthusiasts seeking precise and comprehensive heart health monitoring. With the capability to record heart rate continuously for up to 24 hours during exercise, it empowers users to track their heart’s performance in real-time.
The Frontier X2 stands out for its precision and advanced features. Whether you’re training indoors or outdoors, this monitor provides valuable data to optimize your workouts and understand your heart health better. With its unparalleled accuracy and user-friendly app, it remains a top choice for those striving to maintain peak fitness levels.
Key Features
- Continuous Monitoring: Records 24-hour heart rate data during various activities.
- Vibration Alerts: Personalized single and double buzz alerts help maintain optimal training zones without distractions.
- Advanced Metrics: Measures Rate and Strain to provide deeper insights into heart health.
- Live-Streaming: Instantly share heart rate data securely to any web browser or mobile device worldwide.
- Versatile Use: Suitable for running, cycling, swimming, and more; waterproof up to 1.5 meters.
- Accuracy: Known for supreme precision, favored by professional athletes.
- App and Dashboard: Access comprehensive health metrics and analyses via the Fourth Frontier app and web dashboard.
Pros:
- Comprehensive Insights: Offers detailed metrics beyond simple heart rate tracking.
- Real-Time Alerts: Keeps users informed about their heart rate thresholds.
- Global Sharing: Facilitate sharing with friends, family, or healthcare providers.
- Durability: Waterproof and designed for versatile use in various environments.
Cons:
- Comfort: Chest straps may be less comfortable than wrist-worn devices for some users.
- Setup Complexity: Initial setup and app integration might be complex for first-time users.
Garmin Venu 3
The Venu series sits between Garmin’s hardcore multisport watches and simple trackers. Venu 3 brings an AMOLED display, advanced training metrics, strong GPS and reliable optical heart monitors tuned for athletes. If you want serious workout metrics but also want a polished display and smart features, the Venu 3 is a strong compromise.
Key features
- Advanced optical HR monitoring tuned for intervals and workouts.
- Full GPS, recovery metrics, training load, VO₂ max, and structured workouts.
- AMOLED display with smartwatch-style interfaces.
- Good battery life for a colour-screen watch (several days depending on usage).
Pros
- Robust training and recovery metrics with a premium display.
- Accurate-enough heart-rate performance for most runners/cyclists.
- Good connectivity and music storage options.
Cons
- Slightly bulkier than slim trackers; pricier.
- For elite athletes wanting lab-grade HR accuracy, chest straps still outperform optical sensors.
- Fewer app/store options vs Apple Watch on iPhone.
Why choose it: You’re an athlete who wants both accurate training metrics and a bright, attractive smartwatch experience.
Polar Ignite 3
Polar has long been a brand for performance and precise sensor tuning. It is one of the best fitness trackers for sleep & wellness-focused users who want precise HR insights. The Ignite 3 targets users who want superior sleep and recovery analytics plus accurate resting and nocturnal HR measurements. Polar’s algorithms and training guidance are well-regarded, especially for users who prioritise physiological metrics and structured training plans.
Key features
- High-quality optical heart-rate monitoring with a focus on sleep/overnight accuracy.
- Sleep staging, recovery insights and tailored training suggestions.
- Lightweight, lifestyle-friendly design with solid battery life.
Pros
- Strong sleep and recovery analytics.
- Good heart-rate stability overnight and during steady-state workouts.
- Polar’s training guidance and research-backed features.
Cons
- Interface and smart features are less polished than mainstream smartwatches.
- Not the best choice if you want a fully featured smartwatch experience.
Why choose it: You prioritise sleep and recovery data and want heart-rate tracking that’s tuned for physiological insight rather than flashy apps.
WHOOP 5.0
WHOOP takes a different approach: the WHOOP band emphasizes continuous physiological monitoring (HR, HRV, respiratory rate, sleep, strain) and pairs hardware with a subscription analytics platform that gives recovery scores and training guidance. There’s no traditional display — the value is in continuous data and coaching. WHOOP’s model bundles the wearable with a membership.
Key features
- Continuous HR and HRV monitoring focused on recovery and readiness.
- Daily recovery and strain scores with personalised coaching.
- Compact, minimalist band — no full smartwatch features.
- Membership required for full analytics and coaching.
Pros
- Market-leading recovery and HRV insights for athletes and highly active users.
- Lightweight and comfortable for 24/7 wear.
- Actionable daily guidance on load vs recovery.
Cons
- Ongoing subscription cost — value depends on how much you use the analytics.
- No standalone watch display or mainstream smartwatch features.
- Not ideal if you want on-watch metrics or phone-like features.
Why choose it: You want continuous recovery and HRV-driven coaching and are okay with a subscription model to get top-tier analytics.
Fitness Tracker Ring for Men Women
The Anarow Fitness Tracker Ring offers a comprehensive health monitoring solution in a sleek, stylish design for both men and women. Its advanced features provide an effortless way to stay on top of your wellness and fitness goals.
The Anarow Fitness Tracker Ring provides a seamless blend of style and functionality, making it an ideal choice for anyone serious about tracking their health and fitness efficiently. With no subscription required and easy app integration, it offers a user-friendly experience for monitoring wellness goals, making daily health management both accessible and effective.
Key Features:
- All-Day Health Monitoring: Tracks heart rate, SpO2, blood pressure, and sleep cycles, delivering real-time data for a holistic health overview.
- Fitness & Activity Tracking: Automatically logs steps, calories, and distance across eight sport modes including running and yoga.
- Hands-Free Photography: Activate your phone’s camera with a simple finger shake for effortless photos.
- Dual Charging & Long Battery Life: Charges in 60 minutes and lasts 3-5 days, with a 400 mAh charging case for convenient on-the-go recharges.
- Advanced Waterproof Design: 5ATM rating ensures durability against sweat and splashes, suitable for various activities.
- Seamless Connectivity: Syncs via Bluetooth with the SmartHealth app, offering detailed health insights without subscription fees.
Pros:
- Comprehensive Tracking: Covers essential health and fitness metrics for complete wellness insights.
- Convenient Features: Unique hands-free photography and multiple sports modes support diverse lifestyles.
- Efficient Charging: Quick charging with long battery life ensures uninterrupted usage.
Cons:
- Sizing Requirement: Accurate sizing is crucial for optimal performance, which may require careful measurement.
- Display Limitations: As a ring, it lacks an on-device display for immediate feedback.
Amazfit Helio Strap Fitness Tracker Wristband
The Amazfit Helio Strap Fitness Tracker Wristband is a versatile and comprehensive health companion designed to support your active lifestyle. Engineered to deliver 24/7 advanced health tracking, the Helio Strap provides pinpoint heart rate monitoring, blood-oxygen levels, stress, and sleep insights. With the ability to track up to 27 sports modes, it offers extensive post-workout insights such as VO₂ max, training load, training effect, and recovery time, all accessible through the user-friendly Zepp App.
Experience unparalleled fitness tracking and health insights with the Amazfit Helio Strap, a must-have for anyone serious about their training and recovery.
Key Features:
- 24/7 Health Tracking: Continuous monitoring of heart rate, blood-oxygen, stress, and sleep.
- 10 Days Battery Life: Long-lasting performance for uninterrupted tracking.
- Optimized for Strength & HYROX Training: Track reps, sets, and rest with precision in the gym.
- 27 Sports Modes: Specialized tracking for various activities.
- HYROX Race Mode: Tailored support for race preparation.
- Zepp App Integration: Analyze data, get AI-driven insights, and optimize daily routines.
- Third-Party Sync: Integrate with Strava, TrainingPeaks, adidas Running, and komoot.
Pros:
- Offers comprehensive health insights for better performance and recovery.
- Long battery life means fewer charges and more focus on your fitness goals.
- Subscription-free with extensive app support for both Android and iPhone.
- Integration with popular fitness platforms enhances its ecosystem.
- Specifically designed modes for strength training and HYROX races.
Cons:
- Requires pairing with an Amazfit smartwatch for full functionality.
- Advanced features might have a learning curve for beginners.
- The reliance on the Zepp App for insights might not suit those preferring standalone devices.
Final Recommendation & Quick Picks
Best overall (everyday + health features): Apple Watch Series 9 — superb sensors, ECG and the richest app ecosystem for iPhone users.
Best value fitness tracker: Fitbit Charge 6— excellent heart-rate and sleep tracking in a compact, affordable form factor.
Best for battery life & discreet wear: Garmin Vivosmart 5 — slim and long-lasting with solid heart and wellness tracking.
Best for athletes who want style: Garmin Venu 3 — great training metrics with a bright AMOLED display.
Best for sleep & physiological insight: Polar Ignite 3 — polished sleep/recovery analytics and steady HR tracking.
Best for continuous recovery coaching & HRV: WHOOP 5.0 — subscription-driven, best-in-class recovery and HRV monitoring for performance-focused users.
Conclusion
There’s no single “best” heart-monitoring tracker for everyone — the right choice depends on whether you prioritise smartwatch features, battery life, raw training accuracy, sleep/recovery analytics, or subscription-based coaching.
If you want a premium all-rounder and use an iPhone, the Apple Watch Series 9 is hard to beat. If you want budget-friendly yet capable heart and sleep tracking, Fitbit Charge 6 is a very compelling pick. Serious athletes should look at Garmin or Polar models, while users focused on recovery and HRV may prefer WHOOP’s continuous-insight approach.