The Inspire HR and Charge 4 have many features in common except for the slight difference in appearance, battery life, and built-in features. Charge 4 which was recently released back in March this year, succeeded the Charge 3, it comes with inbuilt GPS, NFC payment, ability to control music on Spotify and more activity-tracking features, while Inspire HR is also a comprehensive fitness tracker that allows you take advantage of Fitbit’s fitness tracking technology to help you manage your fitness goals. This comparison compares Fitbit Inspire HR vs Charge 4 to find out the differences, and to help you decide which is a better smartband.
Fitbit Inspire HR vs Charge 4 Specs Comparison
| Product Info |  Fitbit Inspire HR Specifications, Features and Price |
 Fitbit Charge 4 Specifications, Features and Price |
|---|---|---|
| Price | $99.00 | $149.00 |
| ABOUT DEVICE | ABOUT DEVICE | ABOUT DEVICE |
| Device name | Fitbit Inspire HR | Fitbit Charge 4 |
| Device type | Fitness smartband | Fitness smartband |
| Gender | Unisex | Unisex |
| Predecessor | — | Fitbit Charge 3 |
| Successor | — | — |
| Models | — | Fitbit Charge 3 (special edition) |
| Date released | March, 2019 | March, 2020 |
| DISPLAY | DISPLAY | DISPLAY |
| Display size | 1.4 inches | 1.57 inches |
| Display type | OLED | Monochromic, OLED |
| Resolution | 126 x 36 px | — |
| Pixel density | — | — |
| Customizable watchface | Yes | Yes |
| Input type | 1 Physical button, Touchscreen | 1 Physical button, Touchscreen |
| Always-On | No | No |
| BODY | BODY | BODY |
| Shape | Rectangular | Rectangular |
| Case material | Thermoplastic | Resin |
| Strap material | Silicone | Elastomer |
| Bezel material | Thermoplastic | Resin |
| Strap size | 140 – 180mm (small), 180 -220mm (big) | 140 – 180mm (small), 180 -220mm (big) |
| Color | Black, Lilac, White | Black, Rosewood, Storm blue |
| Screen protection | Chemically strengthened glass | Anti-scracth glass |
| Dimension | 38 x 18.3 x 11.8 mm | 35.8 x 22.7 x 12.5 mm |
| Weight | — | 27 grams |
| Waterproof rating | Yes, 5ATM | Yes, 5ATM |
| Swim-proof | Yes, recommended | Yes, recommended |
| Durability test | — | — |
| CONNECTIVITY | CONNECTIVITY | CONNECTIVITY |
| Bluetooth calling | No | No |
| Bluetooth | Bluetooth v4.0 | Bluetooth v4.0 |
| Wi-Fi | No | No |
| NFC | No | Yes |
| MEMORY | MEMORY | MEMORY |
| RAM | — | — |
| ROM | — | — |
| Memory card slot | No | No |
| CELLULAR | CELLULAR CONNECTIVITY | CELLULAR CONNECTIVITY |
| Network technology | None | None |
| SIM type | None | None |
| NOTIFICATIONS | NOTIFICATIONS | NOTIFICATIONS |
| SMS alert | Yes | Yes |
| Calls alert | Yes | Yes |
| Email alert | Yes | Yes |
| Event reminder | Yes | Yes |
| MEDIA | MEDIA | MEDIA |
| Audio | No | No |
| Microphone | No | No |
| Loudspeaker | No | No |
| Bluetooth music | No | No |
| Camera | No | No |
| SENSORS | SENSORS | SENSORS |
| GPS | (connected GPS), No | Yes |
| Accelerometer | Yes | Yes |
| HRM | Yes | Yes |
| Gyroscope | No | — |
| Pulse Ox. | No | Yes |
| Altimeter | No | Yes |
| Barometer | No | — |
| Compass | No | — |
| ECG | No | No |
| Thermometer | No | No |
| Ambient light | No | No |
| ACTIVITY TRACKING | ACTIVITY TRACKING | ACTIVITY TRACKING |
| Steps | Yes | Yes |
| Calories | Yes | Yes |
| Distance | Yes | Yes |
| Heart rate monitoring | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Floors climbed | No | Yes |
| Blood oxygen | No | Yes |
| Blood Pressure | No | No |
| Stress | Yes | Yes |
| ECG tracking | No | No |
| Fall detection | No | No |
| Menstrual cycle | Yes | Yes |
| VO2 Max | — | Yes |
| Onscreen workout | No | No |
| Preloaded sport modes | 20 | 15 |
| BATTERY | BATTERY | BATTERY |
| Battery type | non-removable Lithium-polymer | non-removable Lithium-polymer |
| Battery capacity | — | — |
| Battery life | Regular: 5 days+, Standby: 8 days+ | Regular: 7 days+, Standby:10 days+ |
| Charging type | Charging dock | Charging dock |
| Charging duration | 1-2 hours | 2hrs |
| Solar power | No | No |
| PLATFORM | PLATFORM | PLATFORM |
| Operating system | Fitbit OS | Fitbit OS |
| Chipset | — | — |
| CPU | — | — |
| GPU | — | — |
| MISC | MISC | MISC |
| Companion app | Fitbit App | Fitbit App |
| Compatibility | Android, iOS | Android, iOS |
| Payment system | None | Fitbit Pay |
| Customizable strap | Yes | Yes |
| Voice Assistant | No | No |
| Find my phone | Yes | Yes |
| Box content | Charger, Fitbit Inspire HR, Manual, Straps | Charger, Fitbit Charge 4, Manual, Straps |
| Price | $99.00 | $149.00 |
Fitbit Inspire HR vs Charge 4 Features Compared
| Fitbit Inspire HR | Fitbit Charge 3 | |
| SMART FEATURES | ||
| Greyscale Touchscreen Backlit OLED display that responds to natural swiping and scrolling. | Yes, Monochrome OLED | Yes, Monochrome OLED |
| Hi-Res Color Touchscreen Amplified brightness up to 1000 nits and durable screen made from Corning Gorilla Glass 3. | No | No |
| Has a loudspeaker | No | No |
| Always-on Display Just glance to see what you need during workouts or when your hands are full. | No | No |
| Ambient Light Sensor Automatically senses the amount of ambient light present, and appropriately dim the device's screen to match it. | No | No |
| Voice Assistant Check the weather, set timers, control your smart home devices, and more, powered by Amazon Alexa. Check supported countries. | No | No |
| Store and Play Songs Store and play 300+ songs on your smartwatch—plus download your favorite Pandora stations or Deezer playlists. | No | No |
| Make Payments from Watch Use your credit and debit cards to make secure purchases anywhere that accepts tap-and-pay. See supported banks | No | No (in special editions only) |
| Connect with Wireless Headphones Listen to your favorite tunes without the wires. | No | No |
| Spotify - Connect and Control music Control your music, "like" songs, and browse recent playlists and podcasts all from your wrist. Works with phone nearby; Spotify Premium subscription required. Not available in all countries. | No | No |
| Sleep Mode Use the sleep mode to mute smartphone notifications and stop your screen from turning on at night. | No | No |
| Do Not Disturb Mode Use do not disturb mode when you want to mute call, text, calendar and app notifications during the day. | No | No |
| Apps On Watch Access your favorite apps for fitness, sports, news, travel, transit and more with a simple tap. | No | No |
| On-Wrist Stats Check your stats on your Fitbit tracker or smartwatch—and get the nudge you need to reach your goals. | Yes | Yes |
| HEALTH FEATURES | ||
| Cardio Fitness Score Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score. | Yes | Yes |
| Sleep Tracking With Light, Deep And REM See your time spent in light, deep, and REM sleep stages and get sleep insights to help you improve. Learn more | Yes | Yes |
| Female Health Tracking Know your body on a deeper level using your tracker or smartwatch with the Fitbit app to follow your cycle, record symptoms and more. | Yes | Yes |
| Count floors climbed | No | Yes |
| Guided Breathing Sessions Find moments of calm throughout your day with personalized breathing sessions based on your heart rate. | Yes | Yes |
| 24/7 Heart Rate Tracking Use 24/7 heart rate to better track calorie burn, see your resting heart rate trends and get real-time guidance to optimize your workouts. | Yes | Yes |
| All-day Activity Tracking Track steps, distance, calories burned, active minutes, hourly activity and stationary time. | Yes | Yes |
| Sleep Score Based on your heart rate, time asleep and restlessness, this personalized score helps you better understand your sleep quality each night. | Yes | Yes |
| Sleep Tracking Understand your rest with automatic sleep tracking and silent alarms on your wrist & bedtime reminders and helpful tips in the app. | Yes | Yes |
| Resting Heart Rate Wear your tracker or smartwatch all day and night to record your resting heart rate and track heart rate over time. | Yes | Yes |
| Blood Oxygen Tracking Tracks your blood oxygen levels overnight to determine how well your blood absolves oxygen. | No | Yes |
| All-day Calorie Burn Better understand the total number of calories you burn—all day and during workouts—to manage your weight and stay on track toward your goals. | Yes | Yes |
| EXERCISE FEATURES | ||
| Real-Time Pace and Distance Using Built-in GPS See your real-time pace and distance without a phone, then get a map of your route in the Fitbit app. | No | No |
| Real-Time Pace and Distance Using Phone GPS See your real-time pace and distance by connecting to your phone's GPS, then get a map of your route in the Fitbit app. | Yes | Yes |
| Workout Intensity Map After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route. | Yes | Yes |
| Active Zone Minutes Feel a buzz when you reach your target heart rate zones during exercise and celebrate when you earn extra minutes outside of workouts. | No | No |
| Personalised reminders Stay on track toward your goals with personalized reminders that remind you to stay active, get hydrated, stick to a sleep schedule, and more. | Yes | Yes |
| SmartTrack - Automatic Exercise Recognition Automatically record select exercises like running, biking, and more. Also, see detailed workout information in the Fitbit app. | Yes | Yes |
| 20+ Goal-Based Exercise Modes Choose from 20+ exercise modes like run, bike, swim, yoga and more, set a goal and get real-time stats during your workouts. | Yes | Yes |
| Swimproof Water resistant up to 50M, so you can wear your tracker or smartwatch in the shower, pool, and beyond. | Yes | Yes |
| On-Screen Workouts Get personalized on-screen workouts that play on your wrist, coach you through each move and adapt based on your feedback. | No | No |
| Reminders to Move See how long you've been active throughout the day and get reminders to fit in a few extra steps when you've been sitting a bit too long. | Yes | Yes |
| Heart Rate Zones Use your personalized fat burn, cardio, and peak heart rate zones to optimize your effort during workouts. | Yes | Yes |
| ECG Tracking Has an ECG app that allows you to take ECG tests directly from your wrist - a feature that can help you detect atrial fibrillation. | No | No |
| EDA Stress Sensor Has an EDA sensor that monitors your stress level and alerts you when stress is detected. | No | No |
| Body Temprature Sensor Has a body temperature sensor that monitors your body temperature changes overnight. | No | No |
| BATTERY LIFE | ||
| Fast Charging Technology Takes far less time to charge the battery to full. | No | No |
| 5 Days Battery life varies with use and other factors. | 7 Days+ Battery life varies with use and other factors. |
|
| Compatibility | Compatible with both Android and iOS devices, Check supported devices | Compatible with both Android and iOS devices, Check supported devices |
Which Should You Buy?
Charge 4 will cost you more, but I think it’s a better bargain than Inspire HR. It’s a better smartband than Inspire HR, as it comes with NFC that supports Fitbit Pay, the ability to control music on Spotify, has a longer battery life, has inbuilt GPS, and is equipped with more fitness tracking features.
Inspire HR is still a decent choice if you have a tight budget.
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