Fitbit is a well-known fitness company that sells a variety of fitness bands. In this guide, I'll compare the Fitbit Inspire, Inspire HR, and Charge 4 to see which one is best for you. Let's get this party started.

Fitbit has a large selection of fitness devices, and the company recently released the Charge 4, which has some fantastic features. Many people are also comparing the Fitbit Charge 4 to other Fitbit fitness devices, such as the Inspire HR and Fitbit Inspire. That is why I compared the Fitbit Inspire vs Inspire HR vs Charge 4 so you could make an informed decision. Let us look at the comparison.

Inspire HR vs Charge 4 vs Fitbit Inspire HR 


Let's start with the costs of these three fitness devices. Fitbit Inspire is the cheapest of the three fitness bands, costing only $70, which is a very reasonable price. Fitbit Inspire HR is slightly more expensive than Fitbit Inspire, and you can get Fitbit Inspire HR for as little as $100.

Fitbit Charge 4, on the other hand, is the company's most recent fitness band, and it comes with some great features that result in a higher price tag. The Fitbit Charge 4 is available for $150. So, if you want the cheapest band, go with the Fitbit Inspire, and if you want a feature-rich Fitness band, go with the Charge 4. Before you make a decision, let's look at some other aspects of these bands.

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Design & Material Choices

The designs of Fitbit and Inspire HR are strikingly similar. In fact, you won't be able to tell the difference if we put both devices together without their bands. Fitbit Inspire and Inspire HR have a simple design and are made of plastic.

When it comes to bands, however, the company uses a softer and more flexible band with a traditional buckle for the Inspire HR. Fitbit Inspire, on the other hand, has a more rigid plastic band with a buckle and clasp closure.

Fitbit Charge 4, on the other hand, has a nearly identical design but appears more premium due to the company's use of an aerospace-grade aluminum case on it. It also has a Corning Gorilla Glass 3 display, which means it can withstand minor scratches. The Charge 4's band is also soft, and it has a traditional buckle.

So, while the design of all three fitness bands is nearly identical, the Charge 4 is the clear winner in terms of material selection.


All three panels have very similar display quality. Grayscale OLED Panels are used by the company in all three fitness bands. Grayscale panels are more readable, but they suffer in direct sunlight.

The Fitbit Charge 4's screen resolution differs from the other two bands on this list. Fitbit Inspire & Inspire HR have a screen resolution of 128 x 72 pixels. While the Charge 4 has a resolution of 160 x 100 pixels, the display quality on the Charge 4 will be much better.

So, if you want a fitness band with a high-quality display, the Fitbit Charge 4 is an obvious choice.

Dimensions & Depth

In terms of Dimensions and Depth, all three devices have slightly different dimensions and depth figures. However, because the difference between these fitness bands is measured in millimeters, you won't be able to tell them apart.


The number of Sensors included with the Inspire, Inspire HR, and Charge 4 is one of the most significant differences between them. Charge 4 is a sophisticated fitness band with a plethora of sensors that enhance its capabilities.

As shown in the table above, the Fitbit Charge 4 has more sensors to help you track various activities. So, in terms of sensors, the Fitbit Charge 4 comes out on top.

Water Resistance

Water-resistance is the most important feature of fitness bands because we mostly use them for sweaty workouts and exercises. Fortunately, all three bands are water-resistant, which means that sweat will not harm the devices. Fitbit Inspire, Inspire HR, and Fitbit Charge 4 have 5 ATM water resistance and can be used for swimming. These bands are waterproof to a depth of up to 50 meters. In terms of water resistance, all three bands have the same level, so no one wins in this category.

Weight & Durability

When it comes to weight, the Fitbit Inspire and Fitbit Inspire HR have a similar design and share the same weight of 20g. Fitbit Charge 4, on the other hand, is slightly heavier due to its aluminum construction and weighs 30g.

When comparing the durability of these fitness bands, the Fitbit Charge 4 is more durable than the Fitbit Inspire and Inspire HR due to its aluminum construction. The Fitbit Inspire and Inspire HR have good build quality as well, but because the main case is made of plastic, they are not as durable as the Charge 4.

So, while the Fitbit Inspire and Fitbit Inspire HR are lighter in weight than the Charge 4, they are not as durable as the Charge 4.

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Battery Performance

Battery performance is one of the most important factors in determining whether or not a fitness device is suitable for you. Both the Fitbit Inspire and Inspire HR have the same battery size and offer up to 5 days of battery life. Both devices also use the same charger, which is a USB (Type A) charger with a plug on one end and a magnetic attachment on the other. The charger can fully recharge the Inspire & Inspire HR to 100% in less than 2 hours.

Fitbit Charge 4, on the other hand, has a slightly better battery life, with up to 7 days of battery life without GPS and normal usage. When you turn on the GPS, the battery life is reduced to 5 days. Charge 4 has a larger battery, and it takes about 1-2 hours to fully charge the battery.

So, if you're looking for the fitness band with the best battery life out of these three options, the Fitbit Charge 4 is the way to go.

Health Features

Fitbit is well-known for its excellent health features, and all three bands include a variety of excellent health features that will assist you in staying fit. Let's start with the Fitbit Inspire's Health features.

Fitbit Inspire is the least expensive of the bunch, but it also has limited health features. Fitbit Inspire includes the following features.

  • Tracking of Steps and Activities
  • Burning Calories
  • Sleep Monitoring
  • Female Health Monitoring

Fitbit Inspire HR is slightly more expensive, but it also has more health features. It has the following features:

  • Tracking of Steps and Activities
  • Burning Calories
  • Sleep Monitoring
  • Female Health Monitoring
  • Stages of Sleep
  • Sessions of Guided Breathing

Fitbit Charge 4 is a more advanced fitness tracker with more features than the Inspire and Inspire HR. The Charge 4 includes the following features.

  • Tracking of Steps and Activities
  • Burning Calories
  • Sleep Monitoring
  • Female Health Monitoring
  • Stages of Sleep
  • Climbed Floors
  • Sessions of Guided Breathing
  • Minutes in the Active Zone

As you can see, Charge 4 has more health features and is the clear winner in this category. However, Inspire HR includes a good number of features.

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Exercise Features

A good fitness band should include a variety of exercise features to assist you in tracking your workout. These three fitness bands each have a unique set of exercise features, which we will discuss in detail in this section.

Fitbit Inspire has basic exercise features and you can literally count them on your fingertips because it only has two Exercise features. It can detect when you are exercising and begin tracking the activity, but it lacks a profile for each exercise, making it less efficient than profile-based tracking. It also has move reminders, so if you sit in one spot for an extended period of time, it will remind you to move.

Inspire HR & Charge 4 on the other hand, come with a variety of exercise features, and both bands share similar exercise features. The following features are included with the Inspire HR & Charge 4.

  • Recognize Yourself
  • Reminders to Move
  • Swimming Tracking
  • There are over 20 different exercise modes to choose from.
  • Heart Rate Monitoring 24 Hours a Day, 7 Days a Week
  • Cardiovascular Fitness Levels

In terms of exercise features, Inspire HR and Charge 4 are on par, so this comparison will end in a tie.

GPS Tracking

GPS tracking is another important factor that many people use to keep track of their activities' routes. Unfortunately, the Fitbit Inspire does not include a GPS tracker, so it will not be able to track your movements. Fitbit Inspire HR has a connected GPS feature, which means it does not have a dedicated GPS sensor and instead uses the GPS sensor on your smartphone to keep track of your progress. So, if you want your device to track your route, you'll need to bring your smartphone with you.

Fitbit Charge 4 includes a built-in GPS tracker, allowing the device to track your route and keep detailed stats on the device. It also does not require you to carry your smartphone with you, so you can go cycling, running, or walking without it. So, if you want effective GPS tracking on your device, Charge 4 is the best choice.

Additional Features: SPO2 Sensor

Fitbit Charge 4 also includes an Advanced SPO2 Sensor, which measures the amount of oxygen in your blood. Do you want to learn more about blood oxygen? Check out one of my most recent posts on the best smartwatches with oxygen sensors.

It is a very useful metric that can quickly indicate if your body is having problems with breathing or the lungs. If you notice significant changes in your blood oxygen levels, this is an indication that something is wrong and you should go to the hospital right away. It is a good sign if the changes are minor.

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What are Active Zone Minutes?

Fitbit has recently launched a new fitness metric known as "Active Zone Minutes." It basically tracks your heart rate in the target zone and your progress toward your weekly goal of 150 minutes.

Many health organizations, including the World Health Organization (WHO), the Centers for Disease Control (CDC), and the American Heart Association, recommend at least 150 minutes of physical activity per week.

This feature is exclusive to the Fitbit Charge 4, and it is not available in the Fitbit Inspire or Inspires HR. Based on your age and resting heart rate, Charge 4 calculates the targeted heart rate zones. As your fitness level improves, the watch automatically recalculates these zones.


That's all for now, folks. I hope you found this comparison useful and that it will help you find the next Fitbit device for you. If you're looking for a low-cost fitness band, the Fitbit Inspire is the best option. If you want a feature-rich fitness band and money isn't an issue, the Fitbit Charge 4 is an excellent choice. If you want a good fitness band for less than $100, the Fitbit Inspire HR is the best option. Please let me know if you have any questions in the comments section below. Visit the website for more helpful guides.

The above content published at Collaborative Research Group is for informational purposes only and has been developed by referring to reliable sources and recommendations from experts. We do not have any contact with official entities nor do we intend to replace the information that they emit.


Luke is passionate about fostering student involvement and connection. He studied psychology for his major and likes learning about the past. Luke aims to specialize in artificial intelligence and cybersecurity. .

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