Want to lose weight? Keeping track of your goals through a smart scale is a great way to back yourself. Big name fitness brands are making connected scales that make it easier to keep tabs on the ups and downs in the journey to shave off those pounds.
A top body analyser will track your weight, body fat and even heart rate, while also syncing up progress to provide you with an eventual catalogue of information.
Read our round-up: Best fitness trackers
It's also useful to factor in the ecosystem that tracks your weight and how useful the information can actually be. So read on for our round-up of the best smart scales in the game.
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Fitbit Aria 2
The Fitbit Aria 2 builds on top of the original, remaining one of the most reliable and informative health gadgets on the scene, providing up to eight registered users with accurate stats about weight, BMI and fat percentages.
The big new thing here is that the Aria 2 has been re-engineered with FDA approval in mind. Fitbit says this means the scale is far more accurate than before, and they've also made some slight improvements to the design and interface that you may or may not notice.
Regardless, the scale is a good-looking wedge of glass available in black or white, with the backlit display also flashing a range of data concerning identification, weight, body fat percentage and syncing.
As a standalone set of scales, there are options below that offer slightly more, but Fitbit owners will get more from adding the Aria 2 to their health tech line-up, rather than opting into a whole new ecosystem.
The app (or dashboard software, if you prefer) is easy to navigate, and after a few weeks the weight/BMI graphs will transform from daunting into useful reading. For a complete assessment of your eating and exercising habits there's also a food diary log, and to keep you motivated you can sign up to compete with friends and boast about triumphs (or not) via social media.
See what we made of the latest Fitbit scale in our extended Fitbit Aria 2 review.
Nokia Body Cardio
Like most of its competitors, the Nokia Body Cardio measures weight, BMI, body composition (fat, muscle, water and bone mass) and standing heart rate, sending each to the Nokia Health Mate app pretty much immediately.
Unfortunately, though, one of the scale's biggest selling points - the Pulse Wave Velocity metric, which is an indicator of hypertension - has been pulled from the device. Essentially, since PWV sits on the medical end of tracked metrics, and the Body Cardio doesn't have FDA approval, there's likely concern within Nokia that the device would face regulation if the feature wasn't neutralised.
The omission does present problems, as does the news that Nokia's digital health business has been sold to the co-founder of Withings. The scale will continue selling for now, but it's unclear how well supported it will be long term.
Garmin Index Smart Scale
The new Garmin Index scale is one of the more complete scales on the scene, with both Bluetooth and ANT+ connectivity built in. This means it can pair with your smartphone and fitness watches, such as the Fenix 5, to measure weight, body mass index, body fat and muscle mass and have them added to the Garmin Connect platform.
This is a superb addition for runners and users of Garmin's sports watches, while the scale can also support a mammoth 16 different profiles.
The QardioBase will give you your body mass index, weight and body composition, but what sets it apart are some of its additional features. Firstly, it has haptic feedback to gently let you know your weight has been recorded. It also can be set up to send you reminders to weigh yourself if you're avoiding it because you had one too many cheat days.
More importantly, there's smart feedback. After you weigh yourself, the scale will give you a friendly smiley face if you're progressing toward your goals. There's also a pregnancy mode, allowing mothers-to-be to track their progress and even add pictures via the companion Qardio app. That app, by the way, is where all your information is fed.
Polar's smart scale supports up to 10 individual profiles — just in case you live in a hostel or share your device about at work — and will keep a log of weight and body mass index (BMI) within the Polar Flow app.
It works using Bluetooth Smart to link to a paired smartphone or Polar Loop band, which will show you progress against your weight goal. Unfortunately, though, it lacks some of the metrics you get with the Garmin and Nokia, and won't display body fat percentage or muscle mass data.
Under Armour HealthBox
Available primarily as part of the Under Armour Health Box, which comes with a fitness tracking band and heart rate monitor, the scale is a standard affair, which isn't as comprehensive as its rivals.
It tracks weight and body fat percentage and can recognise up to 8 different users. The data syncs into Under Armour's impressive app ecosystem and it can be tracked with MapMyFitness and MyFitnessPal, as well as UA Record.
Before you buy, check out our full, in-depth Under Armour HealthBox review, as we weren't entirely impressed by it, while Under Armour has since announced its going to stop making connected fitness devices.
The iHealth Core measures more than just your weight, adding muscle, bone, water and into the mix with bioimpedence tech, as well as BMI and all the usual metric suspects. Supporting up to 10 users, it feeds into the growing iHealth ecosystem and records and tracks data within the ByVitals app.
The company also builds glucose monitoring and blood pressure devices, making this a viable alternative to Nokia's excellent health monitoring devices.
Another Bluetooth 4.0 device, this time for iOS users only (iPhone 4s and above), the Balance looks good and syncs quickly with the Wahoo Wellness app. It tracks weight and BMI, and has the option for 16 different profiles and weight goals. Handily, it also stores up to 130 weigh-ins so you don't have to have your phone with every time you step on.
The Wellness app offers the usual collection of graphs and goal alerts, but also syncs your weight data with the superb calorie-counting, exercise-logging MyFitnessPal range of apps. Wahoo isn't unique with this — Fitbit and Nokia both offer the same data sharing — but for the price it is a great extra to have on board.