Exploring the Yunmai Smart Scale 3: A detailed review & analysis

Yunmai Smart Scale 3




Ease of use




Value for money



  • At $50, offers excellent value for its features and performance.
  • Consistent and accurate weight measurement
  • Tracks 13 different body metrics
  • The modern, minimalistic design is visually appealing
  • 75 day battery life, rechargeable


  • App need to be open to measure full set of body composition metrics
  • No WiFi connectivity, only Bluetooth

Achieving a healthy weight is essential at any age, as it impacts our energy levels, cardiovascular health, and self-confidence. In a market filled with competition, smart scales can simplify this task by sending weight data to a corresponding app on your mobile device or web dashboard, allowing you to track your progress over time.

The Yunmai Smart Scale 3 stands out as a budget-friendly option among the myriad of smart scales available. Like most devices in this category, it aims to provide users with more than just weight measurements. It offers various body metrics, which could potentially assist users in understanding their overall health.

In this review, I put the Yunmai Smart Scale 3’s accuracy and usability to the test. Read on to find out what I made of it.

The device can be purchased on Yunmai’s website for $50 and you can also find a selection of Yunmai smart scales on Amazon.

Jump to

Design, hardware, battery life
Features, performance
The bottom line

Yunmai Smart Scale 3 review: Design, hardware, battery life

Look & feel

The Yunmai Smart Scale 3 boasts an aesthetically pleasing design. The device is sleek and modern, making it a stylish addition to any bathroom. Its thin and lightweight profile further enhances this minimalistic appeal. As far as I’m aware the scale is only available in white, but this color choice adds to its clean design.

One notable feature of the scale is its extra-large surface area. To be exact, it measures 300 x 300mm which makes it is slightly bigger than many conventional scales. This type of design has the benefit of comfortably accommodating different foot types and weight up to 150 kilograms. It also makes it very stable.

The visual appeal of the scale is further enhanced by the soft rounded edges which feature a 2.5D curved tempered glass. The anti-skid bottom design prevents any sliding around, further ensuring stability and security during use.

Yunmai Smart Scale 3 review

Moving quickly on and the upper portion of the scale features an inconspicuous LCD display. You can use this to check your weight and body fat directly on the device. However, for more comprehensive body composition stats you will need to fire up the smartphone app. But more about that later.

When the scale is idle, the display turns off, seamlessly blending with the rest of the design. As soon as you step on the scale, the display lights up. The fonts are rendered in a slightly lighter shade of white compared to the rest of the product, further enhancing its visual appeal.

Yunmain Smart Scale 3 review

All things considered, although the Yunmai Smart Scale 3 doesn’t significantly deviate from the look and feel of other smart scales, it offers a solidly built, attractive, and minimalistic design. The extra-large surface area, discreet LCD display, and an anti-skid bottom design, definitely work in its favour.

Under the hood

Under the hood is tech that allows Yunmai Smart Scale 3 to measure an extensive set of 13 body metrics in just 3 seconds. This is courtesy of advanced sensors which pack 8 specialized measuring diodes. This cutting-edge tech doubles the number of sensors found in typical scales with 4-weight G-type and E-type sensors. Furthermore, the Yunmai scale boasts 55mm large electrode measuring diodes. Basically, that’s a lot of fancy languge meaning the scale should take accurate measurements.

Yunmai says the scale’s BIA (bioelectrical impedance analysis) sensor is designed to minimize error. For those not in the know, a BIA sensor measures the body’s composition by sending a harmless electrical current through the body, gauging resistance in different tissue types based on their water content. That’s how you get the wide range of stats in addition to weight.

As its name implies, this is the third generation in this range, plus there are other Yunmai smart scale products. It is clear that with each new version, the company is improving the tech inside, with much of the focus being on accuracy of collected data.

Yunmai Smart Scale 3 review

As far as battery life, the scale doesn’t dissapoint. You can expect a single charge to last approximately 75 days. Presumably that figure has been estimated on the basis that you will weigh yourself once each day. I only tested the scale out for about 10 days so can’t confirm this sort of battery life. However, there’s no reason no to trust this claimed figure. The Yunmai smale smartly conserves battery life by automatically powering off when not in use, helping to achieve the more than two month life between charges.

Refueling is simple; just plug in the provided USB-C cable, or any standard USB-C cable, to replenish the battery. This convenient feature ensures the scale is always ready for use, without the hassle and expense of constantly replacing batteries. Those with scales that rely on batteries know how annoying it can be having to change batteries.

Yunmai Smart Scale 3 review: Features, performance

A budget scale that offers a wealth of data

The smart scale space is a crowded one. These products range in price from well-established brands that can set you back $100, to lesser-known brands at significantly lower prices. With its $50 price-tag, the Yunmain Smart Scale 3 fits into the budget category.

But despite its affordable price-tag, I was impressed by the variety of metrics the Yunmai Smart Scale 3 offers. This includes weight, BMI, body fat %, skeletal muscle mass, water %, protein, visceral fat index, bone mass, basal metabolic rate, biological age, fat weight, body fat mass index, and fat-free mass.

Yunmai Smart Scale 3 review

To get a comprehensive set of measurements, you’ll need to step barefoot onto the scale, making sure your feet are positioned over the four metal sensors. While you can get weight and body fat percentage without the app, you will need to open the smartphone app while weighing yourself to access all 13 metrics. And this is the one thing I didn’t like about the scale.

Presumably, the idea here is that you will not be interested in the full set of stats each and every time you step on the scale. I would add that smart scales are not entirely accurate for metrics beyond weight. So take all these additional stats with a grain of salt. But I would have prefered something that operates totally independently from the smartphone.

Also, you need to ensure that the scale is on a flat, solid surface for optimal performance. Any soft surface such as a carpet, and the accuracy will suffer. This is because the weight will not be equally distributed to the four sides. If you are moving the scale, allow 10-20 seconds for the tech inside to adjust before stepping on it. All of this is standard stuff.

The data, smartphone app

The scale does dish out data from day to day that is consistant. You are not going to get big jumps which can occur on some of the other scales I tested. I can also confirm that the weight metric it spits out is correct. My body fat per cent metric is also roughly where I expect it to be. As far as the other body composition metrics – experience has thought me to treat them as a nice add-on, but I tend not to place too much belief in them.

Yunmai Smart Scale 3 review

The accompanying smartphone app is minimalistic and quite user-friendly. This is the repository of all your historical data and where you can find detailed graphs and charts of health metrics. The Yunmai app is easy to set up, and after providing some basic profile information, you are set to go.

I appreciated that it could store data records for up to 16 people, making it a useful tool for managing the weight of the whole family. Presumably the app learns over time which person has stepped on it by the weight. If it is not sure it will ask before registering the result.

Essential readingTop fitness trackers and health gadgets

You can see below some screenshots from the app. Everything is displayed in a user friendly format and you can change between day, week, month and year – weight or body fat per cent – views. The app also allows you to set a target weight and this will be shown on the chart for you along with your daily weigh-ins. The feature is useful for keeping an eye on – how far you are from where you want to be.

As far as the additional body composition analysis, there is a lot of data to sync your teeth into. Some of this is only shown for your latest weigh-in, while a selection of other metrics can be seen below the chart for each day. It is helpful that clicking on the additional body composition metrics reveals a new screen. This shows healthy and unhealhy ranges for each metric – along with where you currently stand. There’s also a short explanation on the type of data each metric captures.

Yunmai Smart Scale 3 review: the bottom line

The Yunmai Smart Scale 3 delivers impressive value for its budget-friendly $50 price tag. With a sleek and modern design, the scale offers a wide range of body metrics to help users track their overall health. The scale’s accuracy in weight measurement and consistent data make it a reliable choice for daily weigh-ins.

While the additional body composition metrics should be taken with a pinch of salt, they still serve as a nice add-on for users interested in a more comprehensive understanding of their health. The accompanying smartphone app is user-friendly and convenient, allowing for easy tracking and goal-setting.

One downside to the Yunmai Smart Scale 3 is its reliance on the smartphone app for accessing all 13 metrics. But this can be overlooked considering the scale’s overall performance and affordability.

All things considered, the Yunmai Smart Scale 3 is a solid option for those seeking an affordable and feature-rich smart scale. It provides reliable weight measurements and an array of additional metrics, making it a great tool for users focused on achieving and maintaining a healthy weight.

The device can be purchased on Yunmai’s website and you can also find a selection of Yunmai smart scales on Amazon.

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Marko Maslakovic

Marko founded Gadgets & Wearables in 2014, having worked for more than 15 years in the City of London’s financial district. Since then, he has led the company’s charge to become a leading information source on health and fitness gadgets and wearables.

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