Here Are The Best Heart Rate Monitor for HIIT

A few years ago, monitoring heart rate during workouts was something exclusively for two different types of users: the hardcore athletes and the ill ones. Now, having a heart rate monitor doesn’t limit to these profiles. Thanks to the new technologies and the popularity they have gained in modern society, most people who are training have some interest in this. From cycling and sprinting to lifting weights, tracking data is becoming a serious need.

But every single fitness discipline out there makes better use of different kinds of monitors, even HIIT exercise bikes. With this in mind, we will dedicate the following lines to HIIT users, which are becoming more a more every day. But getting the best fitness tracker for HIIT isn’t an easy task, indeed. This fitness discipline is one of the toughest, taking people beyond their limits.

The tougher the activity is, better the accessory must be. Because people who practice HIIT often go beyond their limits, the chosen heart rate monitor must be good enough to track accurate data during the entire session. Fortunately, we have you some great insights about how to choose the best watch monitor for HIIT.


HIIT Heart Monitor Reviews

Scosche Rhythm+ Heart Rate Monitor Armband Review

scosche-rhythm-reviewAs one of the most popular fitness tracker for HIIT, the Rhythm+ from Scosche offer high precision along with good looks and convenience. This piece of equipment works along the mobile apps that represent the standard for the industry: DigiFit, Strava, Wahoo Fitness, and many others.

But the Rhythm+ is more capable in terms of connectivity. Thanks to its dual-mode processor and Bluetooth, it can transmit data simultaneously to ANT+ displays and smartphones.

The battery life is rated at 8 hours of full activity, so you don’t have to worry about running out during training. After that, you can simply charge it with an included cable.


  • Compatible with a wide variety of devices.
  • Lightweight for maximum comfort during HIIT and other activities.
  • The elastic band is made of high-quality materials and is really durable.


  • The band can absorb a lot of sweat, making its use uncomfortable after a while.
  • Some users reported fake spikes in heart rate when tracking.
  • No screen for data report.


Polar Ft1 Heart Rate Monitor Review

polar-ft1-heart-rate-monitor-reviewAfter many years, Polar have demonstrated its strong sense of quality by launching several models, many of them considered individually as the best fitness tracker for HIIT.

Now, we need to address the Polar Ft1 model, a fantastic alternative with an outstanding price tag. This model has its own display to show us real-time data and summarizing information about the ending training session.

Making it work is really straightforward, using a single button. While this may be a problem for more advanced users, it results wonderful for people who is beginning to train. Also includes the time and a stopwatch, which come handy and allow us to less equipment during our workouts.


  • Really easy to use, being highly appropriate for beginners and older people.
  • A huge display allows monitoring real-time data.
  • Good price in comparison with other models in the market from recognized brands.


  • Way too limited in terms of functionality and advanced features.


Mio FUSE Heart Rate, Sleep + Activity Tracker Review

scosche-rhythm-reviewFor those users who want to track their entire life, the FUSE monitor is a great alternative. This model was designed to help athletes during their training and after it as well. The extraordinary design features a compact LED display that shows us simplified information. But when more information is needed, we must connect the monitor with another device.

The FUSE from Mio tracks heart rate directly from the wrist and goes beyond, monitoring calories, distance, sleep, pace, and goals. The 5-level LED and vibrating alarms work like a charm, letting us know about the heart rate zone.


  • Fantastic design that allows us to use it all day long.
  • Water resistant to 30 meters.
  • Comfortable and ergonomic.
  • Users report high-accuracy for tracking data.


  • Limited connectivity when it comes to working with mobiles apps.
  • The simple design and too many features can make the operation really complicated.



If we need to select the best watch monitor for HIIT, comparing the available alternatives is a priority. The task itself is hard but facing one option with another can be a reliable way to go.

Scosche Rhythm+ vs Mio FUSE

Let’s begin with the Rhythm+ and the FUSE, two amazing alternatives with massive differences between them. Both models have really attractive designs, being the FUSE the only model with a display.

The Rhythm+ is used as an armband, placed close to the elbow. On the other hand, the FUSE must be placed on the wrist. According to most reviews, the FUSE is more accurate and practical, displaying real-time data without the need of extra equipment. Also, the FUSE is water-resistant, even submergible, when the Rhythm+ can’t even take some sweat without becoming uncomfortable to use.


Polar Ft1 vs Scosche Rhythm+

Comparing these two models is hard: the former has a big display, a lower price tag, and a really ordinary design, while the latter needs more equipment to show data, is used on the forearm, and has a sleek design.

Here is where the users can be more divided than before. The Rhythm+, despite not having a display, have a wide array of features and track plenty of data. On the other hand, the Ft1 is really limited, being more appropriate for inexperienced users that are beginning with HIIT.


Buying Guide: What You Need to Know?

When it comes to choosing the best fitness tracker for HIIT, there are some basic criteria we can use in order to understand our real options. HIIT, which stands for High-Intensity Interval Training, demands quality equipment in case we want to gather useful data. Because of this, we will go beyond the classic advice of “choose quality”. We need to understand our own needs; that’s what truly matters.

The heart rate monitors in the market right now are easy to classify, actually. We find three different type and, from that point, we can understand our options.

  • Optical Heart Rate: With the apparition of smartwatches for all kinds of uses along with our mobile devices, the optical heart rate earned great popularity. This kind of monitor use LED pulsations in the arm, making light to reflect under the skin. This way, the device can calculate heart rate with the light’s density that returns.
  • Chest Straps: If you need the highest accuracy possible, the chest straps are your best alternative. This type of monitor is placed in the torso, adjusted just below the chest area. They work by measuring electrical pulse, just like the scientific grade machines used in hospitals. In comparison with other types of equipment, this is the most accurate one, also the most uncomfortable to use.
  • In-ear Optomechanical: For those users that want the latest piece of technology, this kind of fitness tracker would be the right call. These sensors work by measuring heart rate through the skin that is inside the ear. Plugin in like earphones, they call monitor blood flow thanks to the many small vessels in the area. As expected, these are the most expensive ones.

Now we know the basics about the three different types of heart rate monitors that actually dominate the market, let’s make a quick mention to the most prominent features we can find out there.

  • Water-resistant: This feature is highly useful if you plan to use the equipment in the water. But we are looking for the best watch monitor for HIIT, not for swimming. Nevertheless, the rain can surprise you if you are training outdoors.
  • Data Reporting: There are monitors that gather data so you can export it to a computer later. But if you are going serious, you can choose models with screens and ways to show directly the gathered data. This is useful if you want the information during or right after training.
  • Connectivity: While the latest models do offer full connectivity features, there are others (cheaper) that go short on this. Paying attention to Bluetooth, WiFi, and other capacities is important. This will tell you how it can connect to other devices, the Internet, export data, and more.

Hopefully, this information will be enough to know the basics. Having the facts straight will allow you to make the best choice. Now let’s review three different models we like a lot.



The best fitness tracker for HIIT is that capable of reporting the most accurate data at the moment we need it. If you want a budget-friendly option and don’t need too many features, Polar’s alternative is the way to go. Both the Rhythm+ and the FUSE aims to more demanding users.

But when we recall the main need, tracking information while doing HIIT workouts, we recognize the need of comfort while making aggressive movements. Here, the Rhythm+ has some advantage, being basically fixed in the arm.