Reliable heart-rate data does not have to require an expensive smartwatch or professional training system. The best heart rate monitors under $100 can support workouts, recovery tracking, and everyday health awareness at a more accessible price.
This roundup compares chest straps, fingertip pulse oximeters, and fitness trackers, focusing on sensor type, connectivity, comfort, battery life, water resistance, and compatibility with popular apps and equipment.
Best 10 Heart Rate Monitors Under 100 Picks for 2026
Everyday Wellness Pick
- Bright OLED screen with large readings
- One-button operation and auto power-off
- Includes batteries and carrying lanyard
Best For: Quick home and outdoor spot checks
Reliable Training Upgrade
- Sends heart rate and HRV data in real time
- Up to one year of replaceable-battery life
- Machine-washable strap with 3 ATM rating
Best For: Connected Garmin and cycling workouts
Comfort-Focused Sports Pick
- Breathable armband with wear detection
- Bluetooth pairing with up to three devices
- Up to 38 hours of operation per charge
Best For: Sports workouts and comfortable armband wear
Versatile Connectivity Value
- Bluetooth and ANT+ dual-mode connection
- Works with apps, watches, bikes, and gym equipment
- Up to 300 hours on a replaceable battery
Best For: Multi-device fitness and cycling setups
Best All-Around Smartwatch
MorePro Health Fitness Tracker
- 24/7 heart-rate, sleep, and blood-oxygen tracking
- 120+ sports modes and everyday smartwatch tools
- Up to seven days of battery life; IP67 water resistance
Best For: Budget shoppers wanting a feature-rich fitness smartwatch
Best Chest Strap Sensor
GEOID HS500 Heart Rate Monitor
- ANT+ and Bluetooth connectivity for training equipment and apps
- Movement- and sweat-noise reduction algorithms
- Up to 800 hours from a replaceable CR2032 battery
Best For: Dedicated workout heart-rate tracking with broad compatibility
Best Budget AMOLED Tracker
Fitness Tracker with 24/7 Heart Rate
- 1.10-inch AMOLED display with custom watch faces
- 24/7 heart rate, sleep, activity, and 25 sport modes
- IP68 water resistance and up to seven days of battery life
Best For: Daily wearers wanting a bright display and essential tracking
Best Chest Strap
Coospo H808S Bluetooth Heart Rate Monitor
- Stated ±1 BPM accuracy
- Bluetooth and ANT+ connectivity
- Up to 300 hours of battery life
Best For: Dedicated workout heart rate tracking
Best All-Day Tracker
Motivaris Fitness Tracker with Heart Rate Monitoring
- Heart rate, SpO2, sleep, and stress tracking
- 100-plus sports modes
- 7–15 days of claimed battery life
Best For: Everyday wellness and activity tracking
Best Smartwatch Features
DIVElink Fitness Tracker Watch
- Five-minute heart rate monitoring intervals
- Bluetooth calling and 100-plus sport modes
- 7–10 days of typical battery use
Best For: Connected fitness tracking and smartwatch functions
Everyday Wellness Pick – Fingertip Pulse Oximeter
For shoppers comparing heart rate monitors under 100, this fingertip pulse oximeter is a simple option for quick spot checks. It displays pulse rate alongside SpO2, signal strength, and a waveform bar graph on a bright OLED screen, with one-button operation and included batteries.
Best For: Home wellness checks, workouts, hiking, skiing, and high-altitude trips.
Pros:
- Large, easy-to-read OLED display shows pulse rate and signal strength.
- Compact design, one-button operation, and automatic power-off.
- Includes two AAA batteries, a lanyard, and a one-year manufacturer warranty.
Cons:
- Designed for spot measurements rather than continuous workout tracking.
- Measures SpO2 from 70% to 100%, according to the listed specifications.
This is a practical low-cost choice if you want pulse-rate readings with blood-oxygen information in a pocket-sized device. It is less suitable for users seeking app connectivity or live training data.
Reliable Training Upgrade – Garmin HRM 200
Among heart rate monitors under 100, the Garmin HRM 200 is built for users who want real-time heart rate and heart rate variability data sent to compatible devices. Its adjustable strap comes in two size ranges, while the replaceable battery can last up to a year.
Best For: Garmin users, cyclists, fitness-equipment workouts, and app-based training.
Pros:
- Transmits real-time heart rate and HRV data to compatible watches, computers, equipment, apps, and smartphones.
- Available in XS–S and M–XL strap sizes for a more tailored fit.
- Offers up to one year of battery life with a user-replaceable battery.
- Machine-washable strap, 3 ATM water rating, and one-year limited warranty.
Cons:
- Requires a compatible receiving device or app to view transmitted data.
- The supplied specifications list the product as a chest-strap system, which may not suit users who prefer an armband.
The HRM 200 stands out for connected training and low-maintenance ownership. Confirm device compatibility and strap sizing before buying, especially if you use equipment outside the listed Garmin and app ecosystem.
Comfort-Focused Sports Pick – COROS Heart Rate Monitor
For athletes comparing heart rate monitors under 100, the COROS Heart Rate Monitor uses a soft armband rather than a traditional chest strap. It connects through Bluetooth to up to three devices, automatically detects when it is worn, and provides up to 38 hours of operation per charge.
Best For: Sports and workout sessions where a breathable, flexible armband is preferred.
Pros:
- Soft, breathable band lays flat around the arm and adjusts from 9.4 to 16.9 inches in the large size.
- Pairs with up to three compatible devices simultaneously through Bluetooth.
- Wear detection automatically powers the monitor on and off during use.
- Rechargeable battery provides up to 38 hours of operation or 80 days of standby.
Cons:
- Bluetooth only; it is not compatible with ANT+.
- Intended for sports and activities rather than daily heart-rate tracking.
- USB charging cable is included, but a Type-C adapter is not.
This model makes sense for users who prioritize comfort and flexible device pairing during workouts. Its Bluetooth-only connection and sports-focused design are important limitations for ANT+ users or those wanting continuous daily monitoring.
Versatile Connectivity Value – COOSPO H6 Chest Strap
The COOSPO H6 is a strong value option among heart rate monitors under 100 for people who need broad device compatibility. Its chest sensor supports both Bluetooth and ANT+, works with many fitness apps and gym machines, and offers up to 300 hours of use with a replaceable CR2032 battery.
Best For: Cycling, gym equipment, Peloton-style workouts, fitness apps, and sports watches.
Pros:
- Supports Bluetooth and ANT+ for flexible connections to watches, phones, bike computers, and equipment.
- Compatible with listed apps including Strava, Wahoo Fitness, Polar Beat, Zwift, and Runtastic.
- Up to 300 hours of battery life with a changeable CR2032 battery.
- IP67 protection supports rainy-day training and sweat exposure.
Cons:
- Must not be used for swimming or submerged in water.
- Electrode areas should be moistened before use for stable transmission.
- The sensor should be separated from the strap after each workout.
The H6 is particularly appealing when compatibility and long battery life matter more than a rechargeable design. Follow the moisture and storage instructions to help maintain dependable readings during training.
Best All-Around Smartwatch – MorePro Health Fitness Tracker
If you want one of the more versatile heart rate monitors under 100, the MorePro combines continuous heart-rate tracking with smartwatch features. It also monitors blood oxygen, sleep, activity, and selected wellness metrics, though its health readings are intended for reference rather than medical use.
Best For: Shoppers seeking a budget-friendly smartwatch with broad fitness, wellness, and notification features.
Pros:
- 24/7 heart-rate monitoring plus sleep and blood-oxygen tracking.
- More than 120 sports modes, including running, cycling, walking, and climbing.
- Supports calls, message alerts, music control, and other everyday smartwatch tools.
- Offers up to seven days of battery life and IP67 water resistance for daily use.
Cons:
- GPS is provided through a connected smartphone rather than built in.
- Not designed for diving or surfing.
- Health measurements are not intended for medical diagnosis.
The MorePro is a strong choice when you want heart-rate tracking alongside sleep insights, workout modes, reminders, and phone connectivity. It is less suitable if you specifically need standalone GPS or medical-grade measurements.
Best Chest Strap Sensor – GEOID HS500 Heart Rate Monitor
For exercise-focused shoppers comparing heart rate monitors under 100, the GEOID HS500 takes a focused chest-strap approach. It sends heart-rate data over ANT+ or Bluetooth to compatible phones, watches, bike computers, treadmills, and training apps.
Best For: Runners, cyclists, and indoor-training users who want a dedicated heart-rate sensor instead of a full smartwatch.
Pros:
- Supports both ANT+ and Bluetooth connections across a broad range of fitness devices and apps.
- Designed with movement- and sweat-noise reduction algorithms for exercise tracking.
- IP67 water resistance and an automatic wake-up time under one second.
- CR2032 battery is replaceable and rated for up to 800 hours.
Cons:
- Swimming is not recommended.
- Requires a compatible display or app; it is not a standalone watch.
- Bluetooth pairing should be completed through the app rather than directly through phone settings.
The HS500 is the most specialized option here, prioritizing workout heart-rate transmission, long battery life, and connectivity. Choose it when accurate exercise feedback is more important than notifications, sleep tracking, or a wrist display.
Best Budget AMOLED Tracker – Fitness Tracker with 24/7 Heart Rate
This fitness tracker is a practical pick among heart rate monitors under 100 if you prefer a bright wrist display and straightforward activity tracking. Its 1.10-inch AMOLED screen pairs with continuous heart-rate monitoring, sleep tracking, 25 sports modes, and connected GPS.
Best For: Everyday users who want a readable smartwatch-style tracker for steps, workouts, sleep, and notifications.
Pros:
- 1.10-inch AMOLED touchscreen with customizable watch faces.
- Tracks continuous heart rate, sleep, steps, calories, and multiple activity metrics.
- Includes 25 sports modes and connected GPS for recording workout routes.
- IP68 water resistance, notifications, reminders, and up to seven days of battery life.
Cons:
- GPS depends on a connected smartphone.
- Sleep and health data are for reference and do not replace medical advice.
- No warranty is listed in the supplied product details.
The AMOLED display gives this tracker an advantage for quick at-a-glance viewing, while its activity and notification features cover common daily needs. It is a sensible value choice, provided you are comfortable using a phone for GPS and treating wellness readings as estimates.
Best Chest Strap – Coospo H808S Bluetooth Heart Rate Monitor
For shoppers comparing heart rate monitors under 100, the Coospo H808S is a focused chest-strap option for workout data. It supports both Bluetooth and ANT+ connections, offers stated ±1 BPM accuracy, and works with compatible fitness apps, watches, bike computers, and equipment.
Best For: Athletes and cyclists who want dedicated, real-time heart rate tracking rather than a general-purpose smartwatch.
Pros:
- Uses Bluetooth 4.0 and ANT+ for flexible device connections.
- Provides stated ±1 BPM heart rate accuracy during exercise.
- Offers up to 300 hours of battery life with a replaceable CR2032 battery.
- IP67 waterproof design and compatibility with apps such as Strava, Zwift, and Peloton.
Cons:
- Requires moistening the electrode areas before use.
- Does not provide a smartwatch display or general activity features.
- The strap is recommended for replacement after six months or 300 washes.
The H808S makes the most sense when heart rate accuracy and broad training-device compatibility matter more than notifications or all-day health tracking. Remember to pair it through the fitness app rather than the phone’s general Bluetooth menu.
Best All-Day Tracker – Motivaris Fitness Tracker with Heart Rate Monitoring
If you want heart rate monitors under 100 that also cover everyday wellness, this Motivaris fitness tracker combines heart rate and SpO2 monitoring with sleep, activity, and stress tracking. Its 1.47-inch display, 100-plus sports modes, and Android/iOS compatibility make it a versatile wrist-worn choice.
Best For: Users seeking an affordable fitness band for all-day health metrics, notifications, and varied workout tracking.
Pros:
- Tracks heart rate, blood oxygen, stress, sleep stages, steps, calories, and distance.
- Includes more than 100 sports modes and IP68 waterproof protection.
- Offers call and app notifications plus music, weather, hydration, and sedentary reminders.
- Claimed battery life is 7–15 days, with more than 20 days of standby time.
Cons:
- GPS is provided through a smartphone rather than built into the tracker.
- The supplied notes do not specify medical certification for its health readings.
- It has broader smartwatch features than a dedicated, workout-only heart rate monitor.
This tracker is a practical pick for buyers who want heart rate data alongside sleep and activity insights. It is especially convenient for people who prefer a lightweight wrist device with notifications and extended battery life.
Best Smartwatch Features – DIVElink Fitness Tracker Watch
Among heart rate monitors under 100, the DIVElink smartwatch stands out for combining heart rate monitoring with calling, notifications, and lifestyle tools. It tracks heart rate at five-minute intervals, supports more than 100 sports modes, and pairs with both iPhone and Android phones.
Best For: Users who want a feature-rich fitness watch with heart rate, sleep, SpO2, notifications, and Bluetooth calling.
Pros:
- Provides heart rate monitoring at five-minute intervals along with SpO2, sleep, and stress tracking.
- Supports more than 100 sports modes for varied activities.
- Includes Bluetooth calling, message notifications, music control, voice control, and reminders.
- Offers 7–10 days of typical use, up to 30 days of standby, and a 12-month warranty.
Cons:
- It has no built-in GPS according to the supplied specifications.
- The IP68 rating is described as suitable for rain and sweat but not swimming or showering.
- Some quick-reply features are limited to Android users.
The DIVElink is better suited to connected daily wear than to minimalist heart rate monitoring. Consider it if smartwatch conveniences and broad activity tracking are as important as monitoring workout and resting metrics.
How We Picked the Best Heart Rate Monitors Under 100
We grouped these affordable monitors by how they collect and display data, since a chest strap, pulse oximeter, and smartwatch serve different purposes. Our comparison emphasizes heart-rate accuracy potential, comfort during movement, Bluetooth and ANT+ support, battery expectations, water resistance, app compatibility, and ease of use.
We also considered whether each device is best suited to structured training, casual exercise, sleep and activity tracking, or occasional spot checks. Product specifications and compatibility can vary by seller and firmware version, so verify current details before purchasing.
Quick Comparison
- Best for workout accuracy: Chest-strap monitors typically provide responsive readings during exercise and work well with compatible watches, cycling computers, and fitness apps.
- Best for simple spot checks: A fingertip pulse oximeter is compact and easy to use when you want a quick reading without wearing a device all day.
- Best for all-day tracking: Fitness trackers and smartwatches combine heart-rate monitoring with steps, sleep, activity modes, and notifications.
- Best for broad connectivity: Models supporting both Bluetooth and ANT+ can connect to a wider range of training equipment and apps.
Key Buying Factors for Heart Rate Monitors Under $100
Sensor Style and Intended Use
Chest straps are generally the better choice for interval training, cycling, rowing, and other activities where timely readings matter. Wrist-based trackers are more convenient for continuous wear but may be less consistent during rapid movement or exercises involving the arms. Pulse oximeters are designed for brief measurements rather than workout recording.
Connectivity and Compatibility
Check whether the monitor uses Bluetooth, ANT+, or both. Bluetooth is common with phones and many fitness apps, while ANT+ can be useful with cycling computers, gym equipment, and compatible sports watches. Confirm supported apps and the number of simultaneous connections if you plan to use more than one device.
Comfort, Fit, and Durability
A chest strap should fit securely without restricting breathing and should have a replaceable or washable contact area when possible. For wearables, consider screen size, band adjustability, and overnight comfort. IP67 or IP68 water resistance helps with sweat and rain, but it does not always mean the device is suitable for swimming.
Battery and Data Features
Compare claimed battery life with your usage pattern. Rechargeable models reduce disposable-battery costs, while replaceable batteries can be convenient for long-term training. Decide whether you need only live heart-rate data or also want sleep, steps, blood oxygen estimates, sports modes, and historical trends.
Who Should Buy Which Heart Rate Monitors Under 100?
Choose a chest strap if training feedback and responsive readings are your top priorities. It is usually the strongest fit for runners, cyclists, indoor-equipment users, and athletes who already own a display device.
Choose a fitness tracker or smartwatch if you want one wearable for everyday activity, sleep, workouts, and basic wellness trends. These devices are more convenient, though their readings can vary with fit and movement.
Choose a fingertip pulse oximeter if you need a lightweight device for occasional spot checks rather than continuous exercise data. None of these consumer products should replace medical evaluation or professional monitoring when symptoms or health concerns are present.