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Add to SafariWhen comparing Polar M400 vs Withings Go, the Slant community recommends Polar M400 for most people. In the question“What are the best fitness trackers that pair with iPhones?” Polar M400 is ranked 2nd while Withings Go is ranked 11th. The most important reason people chose Polar M400 is:
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.
Specs
Question Ranking
Pros
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.
Pro Very easy to read the display in all lighting conditions
The Withings Go fitness tracker uses an E ink screen, the same as what you would find on an e-reader. Rather than being lit like a usual digital screen, it is much more similar to ink on paper. This makes it very easy to read even in very bright conditions or when in the water.
Pro Water won't cause it any issues
The Withings Go is water-resistant up to 50m. Not only can it easily handle wet weather and sweat, but you can confidently wear it swimming or in the shower.
Pro The display is very simple to use
The display is wonderfully simple so there is 0 time spent on fiddling with settings and figuring out how the display works.
Pressing on the display will switch between the time, and your activity progress.
Pro Can go up to 8 months on a single battery
The Withings Go fitness tracker cannot be recharged, but can last up to 8 months on a single battery.
Cons
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.
Con Very inaccurate sleep tracker
The Withings Go is not a good option for someone wanting accurate data on their sleep habits.
It often doesn't detect times you wake up at all, or sometimes registers them as "light sleep". Many users have reported the number of hours spent sleeping being consistently off by a couple hours or more.
Con Known to underestimate step count
A common complaint is that the Withings Go fitness tracker will underestimate the steps taken. This is the opposite of many trackers which are often known for overestimating the step count.
