Fitbit Inspire 2 vs Charge 4 – Head-to-Head Comparison

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Last Updated on March 14, 2024 by Senior Editor

In today’s post, we’re comparing the Fitbit Inspire 2 vs Charge 4 – these two are some of the best Fitbit trackers that are very popular among fitness enthusiasts. Both smartbands will track your daily activities like sleep, heart rate, calories and you can choose from the available 20 sports modes. However, Charge 4 is a higher-end device compared to Inspire 2, it has inbuilt GPS, SpO2 tracking, music control, and more – this explains why it’s priced higher. This article compares the differences between The Inspire 2 vs Charge 4 to help you decide which is right for you.

Fitbit Inspire 2 vs Charge 4 Specifications Compared

Product Info
Fitbit inspire 2 specs

Fitbit Inspire 2 Specifications, Features and Price

fitbit charge 4 specs

Fitbit Charge 4 Special Edition Specifications, Features and Price

Price $79.65 $98.78
Device name Fitbit Inspire 2 Fitbit Charge 4
Device type Fitness smartband Fitness smartband
Gender Unisex Unisex
Release date September, 2020 March, 2020
Predecessor Fitbit Inspire Fitbit Charge 3
Successor Fitbit Inspire 3 Fitbit Charge 5
Versions Fitbit Charge 3 (special edition)
Dimension 37.3 x 16.7 x 12.7 mm 35.8 x 22.7 x 12.5 mm
Weight 27 grams
Shape Rectangular Rectangular
Case material Plastic Resin Plastic Resin
Strap material Silicone Elastomer, Polyester
Bezel material Plastic Resin Plastic Resin
Strap size 140 – 180mm (small), 180 -220mm (big) 140 – 180mm (small), 180 -220mm (big)
Interchangeable strap Yes Yes
Screen protection Corning Gorilla Glass Corning Gorilla Glass 3
Water resistance Yes, 5ATM Yes, 5ATM
Durability test
Swim-proof Yes, recommended Yes, recommended
Color Black, Desert rose, Lunar white Black/granite
Display size 1.4 inches 1.57 inches
Display type Monochrome OLED Monochromic, OLED
Display resolution 126 x 36 px
Pixel density 93.6 PPI
Always on No No
Custom watch face Yes Yes
Input type Touchscreen 1 Physical button, Touchscreen
Bluetooth Bluetooth v4.0 Bluetooth v4.0
Bluetooth calling No No
GPS (connected GPS), No Yes
NFC No Yes
Wi-Fi No No
Memory card slot No No
Technology None None
SIM type None None
SMS alert Yes Yes
Calls alert Yes Yes
Email alert Yes Yes
Event reminder Yes Yes
Third-party apps alert Yes Yes
Reply to Notifications - -
Audio No No
Bluetooth music No No
Loudspeaker No No
Microphone No No
Camera No No
Radio No No
Sensor(s) Vibration motor Vibration motor
Blood oxygen No Yes
Blood Pressure - No
Calories Yes Yes
Distance Yes Yes
ECG tracking No No
Heart rate monitoring Yes Yes
Sleep tracking Yes Yes
Steps Yes Yes
Floors climbed - Yes
Stress Yes Yes
Fall detection No No
Menstrual cycle Yes Yes
VO2 Max Yes Yes
Swim-tracking Yes Yes
Underwater heart rate tracking No No
On-screen workout No No
Sport modes 20+ 20
Battery type non-removable Lithium-polymer non-removable Lithium-polymer
Battery capacity
Battery life Regular: 10 days Regular: 7 days+, Standby:10 days+
Charging type Charging dock Charging dock
Charging time 1-2 hours 2hrs
Solar charging No No
Operating system Fitbit OS Fitbit OS
Companion app Fitbit App Fitbit App
Compatibility Android, iOS Android, iOS
Payment system None Fitbit Pay
Voice command No No
Find my phone Yes Yes
Box content Charger, Fitbit Inspire 2, Manual, Straps Charger, Fitbit Charge 4, Manual, Straps

Fitbit Inspire 2 vs Charge 4

Fitbit Inspire 2 Features

  • Comes in a compact and lightweight design. It features 1.4 inches OLED display that’s bright and easy to read outdoors, and also has touch-sensitive screen.
  • You can select and auto track 5 sport modes with SmartTrack on the Fitbit app.
  • Lets you log your menstrual cycle to enable you monitor changes in your period overtime.
  • Keeps you connected to all that matters to you, so you never get to miss important notifications.
  • Rated 5ATM (swim-proof).
  • Up to 10 days battery life.
  • Customizable watch face and interchangeable straps with 140-180 mm(small size) and 180-220 mm (large size) .
  • Fitbit Inspire 2 Fitness Tracking Features

  • Tracks your steps, distance covered for the day as well as total calories burnt.
  • Equipped with a heart rate sensor that enables it to track your heart rate continuously depending on your settings.
  • It’ll also track your sleep in 4 stages which includes deep, REM, awake, and light sleep stages. You can view your sleep record overtime through the Fitbit app.
  • Can help you manage stress through guided breathing using the breathing app.
  • Lacks inbuilt GPS, but works with connected phone GPS to enable you track outdoor activities.
  • Sedentary reminders to move.
  • 20+ Preloaded sport modes.
  • Compatible with both Android and iOS devices, Check supported devices

Fitbit Inspre 2 Pros

  • Lightweight and sleek design.
  • 10 days long battery life
  • A decent fitness tracker.
  • Swim-proof.

Fitbit Inspire 2 Cons

  • Lacks inbuilt GPS.

Fitbit Charge 4 Features

  • Comes with a 1.57 inches monochrome OLED display with touchscreen support easy navigation.
  • Comes with a case made of resin material, the straps are made of silicone and can be changed. The Charge 4 is available in 3 colors; black, blue, and rosewood colours.
  • Customizable watch face. You can choose from the many watch faces on Fitbit App.
  • Features both a timer and a stopwatch.
  • Up to 7 days or more battery life.
  • Charge 4 can’t store music, however, you can control Spotify music played on your phone.
  • You can send preset replies to notifications you receive. (Android only). You can also reply with your voice and emoji. (not every app is supported)
  • Keeps you connected to all that matters to you, so you never get to miss important notifications.
  • It comes with NFC which supports Fitbit Pay. This is a contactless payment system that will allow you make payment directly from the device.
  • It is rated 5ATM and is also Swim-proof.
  • Features “do not disturb mode” that allows you to mute call, text and smartphone notifications during the day.
  • Features “Sleep mode” that allows you to automatically mute smartphone notifications at night and stop your screen from turning on so you can catch uninterrupted sleep.

Fitbit Charge 4 Fitness Tracking Features

  • Equipped to track your steps, distance, floors climbed and calories all day long.
  • Tracks your sleep in four stages and allows you see your time in awake, light, deep and REM sleep stages. You’ll also get a daily Sleep Score in the Fitbit app and on your wrist to better understand your sleep quality each night.
  • Active Zone Minutes help you make every minute count during workouts by buzzing your wrist when you enter your personalized target heart rate zone. This feature rewards you for time spent in a vigorous or moderate activity that increases your heart rate.
  • Helps you reduces stress with 2 and 5 minute guided breathing sessions that are personalized based on your heart rate.
  • Added inbuilt GPS that allows you track outdoor activities more conveniently. The Charge 4 will track your routes, locations, pace and more when you workout outdoors.
  • Features menstrual cycle tracking that allow you to log periods, record symptoms, track your ovulation and discover patterns in your cycle from the Fitbit App.
  • Tracks your VO2 Max. to help you get a better understanding of your fitness level and learn how you can improve over time with a personalized in-app Cardio Fitness Score.
  • Compatible with both Android and iOS devices, Check supported devices
  • You can select up to 6 activities which include running, walking and more to auto track with SmartTrack.
  • Features SpO2 blood oxygen measurement that allows you to see the level of oxygen in your blood to help you learn when there may be an indication of important changes in your fitness and wellness. You can see your SpO2 nightly average and range on wrist with an SpO2 clock face and on Fitbit Today.
  • It is equipped with an altimeter that enables it to count floors you have climbed.
  • Helps you stay on track toward your goals with personalized reminders that remind you to stay active, get hydrated, stick to a sleep schedule and more.
  • Up to 20 preloaded sport modes.

Fitbit Charge 4 Pros

  • Lightweight, sleek and stylish design.
  • Long battery life
  • Has NFC for Fitbit Pay.
  • A comprehensive fitness tracker.
  • Swim-proof.
  • Has inbuilt GPS.

Fitbit Charge 4 Cons

  • Lacks always-on display.
  • Lacks colored display.

Fitbit Inspire 2 vs Charge 4 – Similarities

In summary, both the Inspire 2 and Charge 4 do about the same thing which is to help you stay fit and as well help you manage SMS, calls, and app notifications you receive from your phone. Each of these two will track your heart rate, sleep in four stages, calories and steps. You will also get the option of choosing from 20 preset sports modes on both smartbands. Both devices also have long battery life.

Difference between Charge 4 vs Inspire 2
Charge 4 has a larger display, inbuilt GPS, Fitbit Pay, SpO2 tracking, altimeter and Music control all of which is not present in Inspire 2

Fitbit Inspire 2 vs Charge 4 – The Difference


  1. Charge 4 has a slightly bigger display than Inspire 2, yet very compact and lightweight.
  2. Charge 4 has inbuilt GPS that allows you to track your outdoor activities without having to carry your phone along. Unlike Inspire 2 which will also allow you to track outdoor activities like your route and location, but you must carry your phone along with you.
  3. Charge 4 will track your SpO2 level and display the result via any SpO2 watch faces, Inspire 2 lacks SpO2 monitoring.
  4. Charge 4 has an altimeter that enables it to count floors climbed which Inspire 2 lacks.
  5. There’s an NFC chip in Charge 4 which will allow you to access Fitbit Pay and make payment with your card directly from the Charge 4. Inspire 2 lacks this feature.
  6. Charge 4 can control Spotify playlist which isn’t possible with Inspire 2.
  7. Charge 4 has a “Do Not Disturb” mode which Inspire 2 lacks. This will allow you to mute notifications during the time of sleep or otherwise.
  8. Inspire 2 is available in three colors which includes lunar white, desert rose and black, while Charge 4 is available in two models; the Standard and Special edition. The standard edition is available in black, rosewood and storm blue colors, while Special edition is available in only granite color.

On the other hand

  1. Inspire 2 has a longer battery life of up to 10 days compared to 7 days with Charge 4.
  2. Inspire 2 is also cheaper, yet a nice fitness tracker that can help you stay fit.
Which is Better between Chare 4 vs Inspire 2
In all, Charge 4 has more features than Inspire 2.


Fitbit Charge 4 is a more complete device than Inspire 2, it gives you access to more features. On the other hand, Inspire 2 is cheaper and is a decent solution if you’re just interested in the basics and do mostly indoor workouts.