Smart Scales
every smart scale we track, one row each, counted the same way: metrics are distinct measurement types with a per-limb breakdown counted once, and heart rate only counts when the scale itself takes it. sort by metrics or capacity, or filter to wi-fi and hand-to-foot if you won't compromise on either. a blank cell means we couldn't verify the spec, not that it's missing.
 Etekcity ESF-551 Smart Fitness Scale | 7.0 Amazon's top-selling body-composition scale: cheap, simple and fine for trends, but no major outlet has properly tested it and the app does the heavy lifting. | 13 | 400 lb | ||||
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 Etekcity ESF24 Smart Fitness Scale | 6.2 The ESF-551's older sibling, still selling briskly for little money. It has vanished from Etekcity's own site and offers nothing the newer model doesn't. | 13 | 400 lb | ||||
 Etekcity HR Smart Fitness Scale | 8.4 Tech Advisor found nothing to fault and CNET singled out its screen. Premium-scale conveniences at a mid-range price make it the value standout. | 14 | 400 lb | ||||
 Fitbit Aria Air | 4.3 Accurate and quick to sync per TechRadar, but it only logs weight. Worth it solely if you want that number inside Fitbit. | 2 | 400 lb | ||||
 Garmin Index S2 | 6.6 Accurate and consistent with a great display, per TechRadar, but the app adds little context and it only makes sense inside Garmin's ecosystem. | 6 | 400 lb | ||||
 iHealth Nexus Pro Smart Scale | 6.5 One of the few budget scales that takes heart rate through the plate. The Gadgeteer found it simple and pleasant, but coverage is thin and the glass smudges. | 12 | 400 lb From The Gadgeteer's review and iHealth's sibling Nexus page; iHealth's Pro spec sheet wasn't reachable. | ||||
 Renpho Elis 1 | 7.4 Garage Gym Reviews' best budget pick for its simple app and unlimited users, though owners report dropped connections and shaky body-fat figures. | 13 | 400 lb | ||||
 Renpho Elis Aspire | 5.8 A Wi-Fi Renpho that should be handier than the Elis 1, but it is an aging model that has faded on Amazon with little recent coverage. | 13 | – No US manufacturer figure found, and the Amazon listing's value is clearly wrong. | ||||
 Renpho Elis Solar | 6.7 Never needs a battery swap or a cable, which is genuinely handy, but it is Bluetooth only, the app has quirks, and Renpho's own US site has moved on. | 13 | 400 lb | ||||
 Renpho MorphoScan Base | 6.4 Brings the Nova's handle scanning down a price tier, but it runs on AAAs, has no lab review, and its own Amazon track record is murky. | – Renpho advertises 50+ but never itemizes them, so there is nothing to verify. | 400 lb | ||||
 Renpho MorphoScan Nova | 7.5 Subscription-free segmental scanning with a handle display. EFTM found weight trends solid but fat and muscle off from DEXA, and it drops weigh-ins without the phone. | 16 Renpho advertises 50+ by counting each limb's readings separately. | 400 lb | ||||
 Withings Body Comp | 7.9 Adds vascular age and nerve-health insight that reviewers liked, but it costs well over the Body Smart and its Amazon ratings are middling. | 11 | 440 lb | ||||
 Withings Body Scan | 8.9 Reviewers call it the most complete home body and heart check you can buy, with a polished app. It is far more scale than most people need. | 12 | 440 lb | ||||
 Withings Body Smart | 8.5 Tom's Guide's pick for most people: dependable readings and one of the best-referenced apps around, with only a few extra scores held behind Withings+. | 9 | 440 lb | ||||
 Wyze Scale BodyScan | 7.2 The cheapest way into hand-to-foot scanning, on the same measurement hardware as the Ultra, but it drops Wi-Fi and no lab has reviewed it yet. | 16 Wyze says 17 including phone-camera heart rate; its Amazon listing says 44 by counting each limb. | 400 lb | Wyze's app reads heart rate through your phone's camera; the scale itself doesn't measure it. | |||
 Wyze Scale S | 5.6 A very cheap Wyze that does the core job, but it has no recent hands-on reviews and offers nothing the Scale X doesn't. | 11 | 400 lb | Wyze's app reads heart rate through your phone's camera; the scale itself doesn't measure it. | |||
 Wyze Scale Ultra BodyScan | 7.8 BGR found it matches pricier rivals at a fraction of the cost. The plastic build and disposable cells are the trade-offs, and no lab has checked its accuracy. | 16 Wyze lists more on the box by counting heart rate and each limb separately. | 400 lb | Wyze's app reads heart rate through your phone's camera; the scale itself doesn't measure it. | |||
 Wyze Scale X | 6.3 CNET found it consistent, yet Tom's Guide hit an unreliable app and a body-fat reading seven points off a gym scale. Fine for cheap trend-tracking. | 12 | 400 lb | Wyze's app reads heart rate through your phone's camera; the scale itself doesn't measure it. |
How the AI score works, and who wrote it
A language model rated these, not a test lab. Every score from 1 to 10 is an AI assessment of how good the product is against the other 18 in this comparison, formed from the specifications we verified plus the published lab reviews and owner reception found while researching each one. Nobody at Slopsheets listened to, wore or plugged in any of it.
It weighs the things a spec table cannot show: how a product is actually reviewed, how well the software works, build quality, and what you get for the money. That is deliberate. An earlier version of this column was pure arithmetic on the table and it ranked a bundle of cheap boxes above a class-leading single unit, because counting hardware is not the same as judging it.
Treat it as an informed starting point and read the sourced comparison, not as a verdict. The score is relative to this comparison only, so it means nothing across categories, and it carries no price, star rating or review count. Every specification behind it is sourced and checked; the score on top of them is opinion.
Frequently asked questions
What actually matters most when choosing a smart scale?
Two columns: Wi-Fi sync and hand-to-foot segmental analysis. Wi-Fi decides whether weigh-ins log without your phone, and the handle decides whether body composition is measured per limb or estimated from your feet alone. Capacity, heart rate and battery type are refinements once those two are settled.
Which spec on this sheet is the most marketing-driven?
The body metrics count. Some brands advertise 44 or 50+ metrics by counting each limb's fat and muscle separately, and some count heart rate taken by your phone. We count distinct measurement types with a per-limb breakdown counted once, so a 16 here is directly comparable with a 12.
Why do the Wyze scales show no heart rate when Wyze advertises it?
Wyze's app measures heart rate by having you cover your phone's camera with a fingertip, so the scale itself never takes the reading. This sheet only marks heart rate when the scale measures it through the plate.
Should I filter for a rechargeable battery?
Only as a tiebreaker. Four scales here never need disposable cells, and most battery models run for many months on a set of AAAs. Filtering the rest out would drop several strong scales, including the Withings Body Smart.
Why are a couple of cells blank?
We leave a cell empty when we couldn't verify the figure rather than guess. The Renpho MorphoScan Base is sold as 50+ metrics with no itemized list, and the Renpho Elis Aspire has no US capacity figure we could confirm.
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