When comparing Fitbit Charge HR vs Polar M400, the Slant community recommends Fitbit Charge HR for most people. In the question“What are the best fitness trackers?” Fitbit Charge HR is ranked 3rd while Polar M400 is ranked 4th. The most important reason people chose Fitbit Charge HR is:
Throughout the day (and night), the Charge HR fitness tracker continuously measures your heart rate. On the app, graphs show your heart rate throughout the day, providing stats such as time spent in the different zones (peak, cardio, and fat burn) as well as your average resting heart rate for that day.
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Pro Continuously measures your heart rate and intensity level to give you 24 hour stats
Throughout the day (and night), the Charge HR fitness tracker continuously measures your heart rate.
On the app, graphs show your heart rate throughout the day, providing stats such as time spent in the different zones (peak, cardio, and fat burn) as well as your average resting heart rate for that day.
Pro Can track your elevation so you know how high you've hiked
When connected to the GPS on your phone, the Charge HR is able to keep track of elevation. This is a great feature for hikers who often like to know how much elevation was gained over the course of the hike.
Pro The app and web platform do an excellent job of keeping you motivated
The Fitbit app lets you set goals and milestones which reward you with badges and trophies when reached.
You can also challenge friends and family, competing against them for top spot on the leader board.
Pro Compatible with nearly every smartphone
In addition to Android and iPhone support, the Charge HR fitness tracker also supports Windows Phone which is fairly rare.
While not an issue most of the time, when upgrading your phone you won't have to worry if your fitness tracker will work with it or not.
Pro Gives you a lot of options for customizing different types of workouts
The "Sport Profile" feature allows you to customize what stats you want to see for each type of exercise. For example, you may want the GPS on for running but not for a circuit workout. These preset profiles save you from having to set up the device each time you exercise.
Pro Gives you custom activity goals suitable for your level
The daily activity goal is a good way to find out how active you really are in your everyday life. Here you can choose your typical activity level from three options and see how active you need to be to reach your daily activity goal.
The time you need to complete your daily activity goal depends on the level you have chosen and the intensity of your activities. Age and gender also affect the intensity you need to reach your daily activity goal.
Pro Detailed reports
The fitness tracker offers excellent reporting including distance, speed, cadence, heart rate (if paired with monitor), ascent, decent, calories, recovery status, and more.
Pro Ability to add training notes
The app allows you to add additional notes to your workouts for better tracking.
Con Band is poorly made and tends to fall apart
Usually after a few months of wear, people start having issues with the band falling apart. Bubbles will appear under the top layer of the band and then the layers start separating.
The Fitbit Charge HR does not have a replaceable band, so you have to replace the whole device if it is no longer wearable.
Con Notifications are easily missed
While the Charge HR fitness tracker will vibrate to notify you of incoming messages on your phone, the vibration is subtle and short. Sometimes you won't notice the buzz and you'll miss the notification.
Con Stats aren't always accurate
While good enough for most users, the data can be skewed because of physical limits of the fitness tracker. For example, an elevated pulse may just be because you chugged back a coffee, but the Charge HR may interpret this as physical activity. Also, measuring a pulse and steps from the wrist can only be so accurate.
Con Sleep tracking lacks detail and accuracy
If you are awake for an extended period of time in the middle of the night and then fall back asleep, the fitness tracker may not see the additional hours as part of your sleep.
Con Unattractive and bulky design
The tracker is quite wide and hard to miss, it's not something that can blend in with what you're wearing outside of sport/exercise type settings.
Con Short battery life when using the GPS
With the GPS turned on, battery life goes from around 24 days to 9 hours.
This is likely fine for people who will always have opportunities to charge it after their run. However for anyone hoping to use the GPS for longer activities, such as hiking, that may not be long enough to be useful.