The best heart rate monitors under $100 make it easier to track workout intensity without committing to premium-device pricing. This lineup includes chest straps, optical armbands, fitness trackers, and a dedicated EKG monitor for different training and health needs.
Before choosing, consider the accuracy you need, how you prefer to wear a monitor, which apps or gym equipment you use, and whether you need basic exercise data or broader wellness features.
Best 10 Heart Rate Monitors Under 100 Picks for 2026
Best Armband Pick
- Optical armband with stated ±1 BPM accuracy
- Bluetooth 5.0, ANT+, and dual Bluetooth connections
- Up to 35 hours of rechargeable battery life
Best For: Comfort-focused training, cycling, and running
Best Long-Term Wearable
- Real-time heart rate and HRV transmission
- Up to one year of replaceable-battery life
- Machine-washable strap with 3 ATM water rating
Best For: Garmin users and frequent trainers
Best Battery Value
- Up to 800 hours from a replaceable CR2032 battery
- ANT+ and Bluetooth compatibility
- IP67 rating with automatic wake-up
Best For: Long training sessions and multi-platform workouts
Best Personal EKG
- Records a single-lead EKG in about 30 seconds
- Detects several listed rhythm results
- Pocket-sized, FDA-cleared, and smartphone compatible
Best For: Portable, occasional heart-rhythm checks
Best Chest Strap Value
- Bluetooth and ANT+ connectivity
- Up to 300 hours of battery life
- Works with apps, watches, and gym equipment
Best For: Cyclists and athletes who want a long-lasting chest strap
Best Everyday Fitness Tracker
MorePro Health Fitness Tracker
- 24/7 heart rate and activity tracking
- Seven sports modes and sleep tracking
- Up to seven days of daily battery life
Best For: Daily wellness tracking and smart notifications
Best Armband Design
Scosche Rhythm+ 2.0 Heart Rate Armband
- Bluetooth and ANT+ connectivity
- Flexible forearm, bicep, or tricep fit
- HRV mode with up to 24 hours of battery life
Best For: Runners and athletes who prefer an armband
Everyday Smartwatch Pick
- 24/7 heart rate plus blood oxygen, sleep, and temperature tracking
- 123 sports modes with steps, distance, and calorie records
- AMOLED display, IP68 rating, and 10–14-day regular-use battery claim
Best For: Everyday wellness and casual workout tracking
Connected Training Pick
- Optical exercise monitoring with stated ±1 BPM accuracy
- Bluetooth 5.0 and ANT+ for apps, watches, bikes, and gym equipment
- Heart-rate-zone LED indicators, HRV support, IP67 rating
Best For: Connected running, cycling, and gym workouts
Training Accuracy Pick
- Real-time heart rate data from a soft adjustable chest strap
- Bluetooth and ANT+ compatibility for apps and training equipment
- Approximately 300-hour battery life with IP67 sweat and rain resistance
Best For: Structured running, cycling, and interval training
Best Armband Pick – COOSPO HW9
For shoppers comparing heart rate monitors under 100, the COOSPO HW9 is a flexible armband option with optical tracking, heart-rate-zone indicators, and Bluetooth 5.0 and ANT+ connectivity. It is designed for training, cycling, running, and app-based workouts.
Best For: Athletes who prefer an adjustable armband over a chest strap or wrist-based monitor.
Pros:
- Reports heart rate and calorie data with a stated monitoring error of ±1 BPM.
- Five-color LED zone indicator and customizable maximum-heart-rate settings support zone training.
- Offers Bluetooth and ANT+, two simultaneous Bluetooth connections, and compatibility with many fitness apps.
- Rechargeable battery provides up to 35 hours of use and the band is soft, breathable, and adjustable.
Cons:
- Requires periodic recharging rather than using a replaceable battery.
- The default maximum-heart-rate setting is 200 BPM unless customized in the app.
The HW9 is a practical choice when comfort and broad device compatibility matter more than having a display on the sensor itself. Its vibration alert and zone lighting add useful training feedback during exercise.
Best Long-Term Wearable – Garmin HRM 200
Among heart rate monitors under 100, the Garmin HRM 200 stands out for its long battery life, machine-washable strap, and compatibility with Garmin devices, fitness equipment, smartphones, and apps. It transmits real-time heart rate and heart rate variability data.
Best For: Garmin users who want a durable strap monitor with minimal battery maintenance.
Pros:
- Transmits real-time heart rate and HRV data to compatible devices and apps.
- Up to one year of battery life with a user-replaceable battery.
- Machine-washable strap simplifies cleanup after regular training.
- Available in XS–S and M–XL sizes and rated for 3 ATM water resistance.
Cons:
- Requires choosing the appropriate strap size for the intended fit.
- Its supplied details do not specify a rechargeable battery.
The HRM 200 is a sensible low-maintenance pick for routine workouts, especially if you already use Garmin equipment. Its replaceable battery and washable strap are useful for frequent training.
Best Battery Value – GEOID HS500 Chest Strap
The GEOID HS500 is a chest-strap choice for shoppers seeking heart rate monitors under 100 with extended battery life and broad ANT+ and Bluetooth compatibility. Its motion-focused algorithms, automatic wake-up, and IP67 rating suit a range of training activities.
Best For: Runners, cyclists, and indoor-training users who prioritize long battery life and wide app support.
Pros:
- Offers up to 800 hours of battery life with a replaceable CR2032 battery.
- Supports both ANT+ and Bluetooth connections for phones, watches, bike computers, treadmills, and apps.
- IP67 waterproof rating and automatic wake-up help simplify workout use.
- Flashing LED confirms connection and the sensor is designed to reduce movement and sweat interference.
Cons:
- Swimming is not recommended despite the IP67 rating.
- Bluetooth should be connected through the fitness app rather than directly through the phone’s Bluetooth menu.
The HS500 offers strong practical value if you want a conventional chest strap that can run for a long time between battery changes. Its connection guidance is worth following to avoid setup issues.
Best Personal EKG – KardiaMobile 1-Lead
For buyers comparing heart rate monitors under 100, the KardiaMobile serves a different purpose from workout chest straps and armbands: it records a single-lead EKG in about 30 seconds. The pocket-sized device works with a smartphone or tablet and can identify several listed heart-rhythm results.
Best For: People seeking a portable, FDA-cleared personal EKG device for occasional rhythm checks.
Pros:
- Captures a single-lead medical-grade EKG in approximately 30 seconds.
- Can detect listed results including AFib, tachycardia, bradycardia, and normal sinus rhythm.
- Compact design weighs less than one ounce and works without Bluetooth, Wi-Fi, cords, or a PC.
- Results can be emailed to a doctor or another recipient; optional KardiaCare features cost extra.
Cons:
- It is a spot-check EKG device rather than a continuous exercise heart-rate monitor.
- Requires the Kardia app and a compatible smartphone or tablet.
- Additional KardiaCare features require a separate subscription fee.
KardiaMobile is best evaluated as a personal rhythm-checking tool, not as a replacement for a training sensor. Its quick readings and small size make it convenient for on-the-go checks, while medical concerns should be discussed with a healthcare professional.
Best Chest Strap Value – COOSPO H6 Heart Rate Monitor
For shoppers comparing heart rate monitors under 100, the COOSPO H6 is a straightforward chest-strap option focused on real-time workout data. It uses both Bluetooth and ANT+ connectivity, works with many fitness apps and devices, and offers up to 300 hours of battery life.
Best For: Cyclists, gym users, and athletes who want chest-strap accuracy with broad app and equipment compatibility.
Pros:
- Supports Bluetooth and ANT+ connections for phones, watches, bike computers, and gym equipment.
- Works with apps including Strava, Wahoo Fitness, Polar Beat, Zwift, and Runtastic.
- Offers up to 300 hours of use with a replaceable CR2032 battery.
- IP67 protection helps handle sweat and rainy-day training.
Cons:
- Requires moistening the electrode areas for reliable readings.
- Not designed for swimming or soaking.
- As a chest strap, it may feel less convenient than a wrist or armband monitor.
The H6 is a practical pick when compatibility and long battery life matter more than smartwatch features. Its dual wireless modes make it especially useful for structured training across different apps and equipment.
Best Everyday Fitness Tracker – MorePro Health Fitness Tracker
If you want one wearable for daily activity and wellness tracking, the MorePro is a versatile choice among heart rate monitors under 100. Its slim touchscreen tracks heart rate, activity, sleep, and select wellness metrics while also providing notifications and everyday smart tools.
Best For: Users seeking an affordable daily fitness tracker with heart rate monitoring, sleep tracking, notifications, and multiple lifestyle features.
Pros:
- Provides 24/7 heart rate tracking plus on-demand blood oxygen measurements.
- Tracks steps, distance, calories, activity, and light and deep sleep.
- Includes seven sports modes and an IP68 waterproof design.
- Offers call, text, and app notifications with up to seven days of daily battery life.
Cons:
- GPS is provided through a smartphone rather than built in.
- Health measurements are for general wellness and fitness reference, not medical use.
- It is not compatible with PCs, iPads, or tablets.
The MorePro is better suited to all-day wellness and activity tracking than highly specialized training. Choose it if you value a lightweight watch, broad daily features, and a longer list of health-related metrics.
Best Armband Design – Scosche Rhythm+ 2.0 Heart Rate Armband
The Scosche Rhythm+ 2.0 offers an armband alternative for shoppers comparing heart rate monitors under 100. Its optical sensor pairs with Bluetooth or ANT+ devices, while the adjustable band is designed to stay comfortable during running, cycling, gym sessions, and high-intensity workouts.
Best For: Runners and training-focused users who prefer an armband over a chest strap and want Bluetooth, ANT+, and HRV support.
Pros:
- Supports Bluetooth and ANT+ pairing with watches, fitness equipment, and apps.
- Adjustable forearm, bicep, or tricep placement provides a flexible fit.
- HRV mode captures RR interval data for compatible training and wellness apps.
- IP68 protection and up to 24 hours of continuous battery life suit demanding workouts.
Cons:
- Battery life is much shorter than the COOSPO H6’s stated 300 hours.
- HRV features require compatible apps and may be more specialized than casual users need.
- It is an armband rather than a wristwatch with a built-in display.
The Rhythm+ 2.0 is a strong fit for users who want a secure optical sensor without wearing a chest strap. Its dual connectivity and HRV mode add flexibility for athletes using dedicated training platforms.
Everyday Smartwatch Pick – 123-Sport Fitness Tracker
For shoppers comparing heart rate monitors under 100, this fitness tracker is a versatile smartwatch-style option. It provides 24/7 heart rate monitoring alongside blood oxygen, sleep, temperature, step, distance, and calorie tracking, with data managed through the Da Fit app.
Best For: Everyday wellness tracking, casual workouts, and users who want smartwatch features in addition to heart rate data.
Pros:
- Tracks heart rate continuously and also monitors blood oxygen, sleep, and temperature.
- Offers 123 sports modes and records steps, distance, and calories in the companion app.
- Includes a 1.47-inch AMOLED display, IP68 water and dust resistance, and reported 10–14-day regular-use battery life.
- Adds practical features such as weather, sedentary and hydration reminders, remote photography, and phone finding.
Cons:
- It is a general-purpose fitness tracker rather than a dedicated external heart rate sensor.
- Heart rate and other health readings are presented for wellness tracking, not described as medical measurements.
- Some features depend on the Da Fit app and a compatible iPhone or Android phone.
This is a strong choice if you want one wearable for daily activity, sleep, and workout monitoring. Choose a dedicated armband or chest strap instead if your priority is pairing a heart rate sensor with training equipment or sports apps.
Connected Training Pick – COOSPO HW807 Armband
Among heart rate monitors under 100, the COOSPO HW807 stands out for app and device compatibility. Its optical armband is designed for continuous exercise heart rate tracking, with Bluetooth 5.0 and ANT+ support for phones, sports watches, bike computers, gym equipment, and popular training apps.
Best For: Runners, cyclists, gym users, and anyone who wants a reusable armband that can feed heart rate data to multiple training platforms.
Pros:
- Uses an optical sensor with a stated accuracy of ±1 BPM during exercise.
- Bluetooth 5.0 and ANT+ support broad compatibility with apps, watches, bike computers, and fitness equipment.
- LED indicators show heart rate zones, and the monitor also supports HRV tracking.
- IP67 water resistance and approximately 20 hours of battery life support regular training sessions.
Cons:
- It is not recommended for swimming.
- Battery life is about 20 hours per charge, so it needs more frequent charging than many fitness watches.
- Viewing and storing workout data requires a compatible connected device or app.
The HW807 is a practical middle ground between a smartwatch and a chest strap: it keeps the sensor off the wrist while offering convenient app and equipment connectivity. It is especially appealing for multi-sport training where ANT+ support matters.
Training Accuracy Pick – COOSPO H6M Chest Strap
For buyers seeking heart rate monitors under 100 for structured training, the COOSPO H6M uses a chest strap to deliver real-time heart rate data to compatible devices. Bluetooth and ANT+ connectivity make it suitable for running, cycling, indoor training, interval work, and zone-based workouts.
Best For: Athletes who prioritize a compact chest-mounted sensor for training zones, intervals, pacing, and recovery monitoring.
Pros:
- Provides real-time heart rate data through a soft, adjustable chest strap.
- Bluetooth and ANT+ connect with compatible phones, GPS watches, bike computers, fitness equipment, and apps.
- Works with platforms including CoospoRide, Wahoo Fitness, Polar Beat, Zwift, and supported Peloton equipment.
- Reported battery life is approximately 300 hours, reducing charging frequency.
Cons:
- It requires a compatible receiving device or app because the strap has no standalone display.
- The strap should be moistened and fitted snugly for use, then rinsed and dried after workouts.
- IP67 protection supports sweat and rain but is not intended for swimming or prolonged soaking.
The H6M is the most training-focused option here. Its chest placement, long stated battery life, and dual wireless protocols make it a sensible fit for runners and cyclists who already use a watch, phone, or indoor-training platform to view their data.
How We Picked the Best Heart Rate Monitors Under 100
We selected products across the main monitor types available at this price: chest straps, optical armbands, fitness trackers, and a portable single-lead EKG device. We prioritized stated sensor capabilities, Bluetooth and ANT+ connectivity, water resistance, battery life, app or equipment compatibility, and practical use during running, cycling, indoor training, and general fitness.
Because comfort and use case affect satisfaction as much as specifications, the selection also represents different wearing preferences. Chest straps generally suit users who prioritize responsive workout readings, while armbands and watches can be easier to wear throughout the day.
Quick Comparison
| Type | Best For | Main Advantage | Potential Trade-Off |
|---|---|---|---|
| Chest strap | Structured training | Close-to-chest sensor placement and broad device compatibility | Requires wearing a strap around the torso |
| Optical armband | Comfortable workout monitoring | Easy to put on and typically less restrictive | May respond differently across activities and skin conditions |
| Fitness tracker | All-day wellness tracking | Combines heart rate with steps, sleep, and activity features | Usually offers less specialized training connectivity |
| Portable EKG monitor | Personal rhythm checks | Designed for on-demand cardiac readings | Not a replacement for clinical evaluation or emergency care |
Key Buying Factors for Heart Rate Monitors Under $100
Sensor Type and Intended Use
Choose a chest strap if you need timely readings for intervals, cycling, or heart-rate-zone training. An optical armband may be a better fit if you dislike chest straps. Fitness trackers are more useful when you want sleep, steps, activity, and heart rate in one device. A single-lead EKG monitor serves a different purpose and should not be compared directly with exercise-only sensors.
Connectivity and Compatibility
Bluetooth works with many phones, tablets, fitness apps, and exercise machines. ANT+ can be especially useful with compatible bike computers, watches, and gym equipment. Check the exact protocols supported by your preferred app or device before buying, since compatibility varies by platform and model.
Comfort, Battery, and Water Resistance
For frequent training, look for an adjustable fit, washable or replaceable strap components where applicable, and enough battery life for your routine. Water-resistance ratings help with sweat and rain, but they do not always mean a device is suitable for swimming. Confirm the manufacturer’s usage limits.
Health Features and Expectations
Workout heart-rate data can help guide intensity, but consumer monitors are not automatically medical devices. If you are monitoring symptoms, irregular rhythms, or a diagnosed condition, choose a product with appropriate medical features and follow advice from a qualified healthcare professional.
Who Should Buy Which Heart Rate Monitors Under 100?
- For runners, cyclists, and interval training: Start with a Bluetooth/ANT+ chest strap for direct workout feedback.
- For users who dislike chest straps: Choose an optical armband with clear zone indicators and the connectivity your apps require.
- For all-day activity tracking: Consider a fitness tracker that adds sleep, steps, blood oxygen, and activity modes.
- For occasional rhythm checks: Consider a dedicated EKG monitor, while treating its readings as information to discuss with a clinician rather than a diagnosis.
- For indoor equipment users: Verify Bluetooth or ANT+ support for your Peloton, bike computer, watch, or training platform before ordering.