Withings scales compared: Body Smart vs Body Scan vs BodyScan 2 (which to buy)

Which Withings scale should you buy?

Choose the Body Smart if you want a Withings scale for weight, body composition and Wi-Fi sync. It lists at $129.95 and has no handle¹. Choose the Body Scan ($499.95) if you want a 6-lead ECG function and fat and muscle readings for five body zones⁴. Choose the BodyScan 2 ($599.95) only if you also want blood oxygen (SpO2), a display in the handle or six zones instead of five⁹.

The extra money buys features, not shown accuracy. Withings gives no accuracy figure for the Body Smart^{1, 2}. Its 99% DEXA figure for the Body Scan comes from its own 80-person study, and the BodyScan 2 page reuses that figure from the earlier scale^7–9. We found no independent DEXA study of any of the three.

Withings Body Smart, Body Scan and BodyScan 2 side by side

Prices are Withings’ US list prices as recorded November 6, 2026, before tax and without Withings+. Specs come from Withings’ own product and support pages, and none is an independent measurement. This page covers the three Withings scales we’ve reviewed. Withings sells other models that aren’t covered here.

These links go to each brand’s own store and earn us no commission.

Body Smart, Body Scan or BodyScan 2: which fits which need

Each suits a different need, and this isn’t a ranking. Start with whether you want a handle at all.

• You want weight, body composition and Wi-Fi sync for the least money: Withings Body Smart. It lists at $129.95 and runs on batteries¹. The catch: it reads through the feet only, has no ECG, and Withings gives no accuracy figure for it².
• You want an ECG function and readings by body zone: Withings Body Scan. It lists at $499.95, $370 more than the Body Smart^{1, 4}. The catch: its DEXA match is Withings’ own claim, and the price is steep unless you’ll use the ECG^{7, 8}.
• You want SpO2, a handle display or six zones: Withings BodyScan 2. It lists at $599.95, $100 more than the Body Scan⁹. The catch: its 99% DEXA figure comes from a study of the earlier Body Scan, and two firmware updates have changed its body composition calculation for low-fat users^{7, 9, 23, 24}.

What the handle adds to a Withings scale

The Body Smart has electrodes in the platform only, so the current runs through the lower half of the body². It reports body fat, water, muscle, bone, visceral fat and basal metabolic rate for the whole body, plus standing heart rate¹. Withings lists no segmental readings or ECG for it¹.

The Body Scan’s handle adds electrodes for the arms, which lets it estimate fat and muscle in five body zones, and it records a 6-lead ECG over 30 seconds while you stand and hold the handle^{4, 5}. The BodyScan 2 splits the body into six zones, adds a thumb sensor for SpO2 and puts a color display in the handle^9–11.

The BodyScan 2 has two scan types. A Daily Scan takes about 30 seconds and covers weight, segmental body composition, heart rate and pulse wave velocity¹². A Longevity Scan takes about 2 minutes, is offered every 7 days and adds the ECG, SpO2, vascular age and the Nerve Response Score¹². Without the handle you still get weight, BMI, pulse wave velocity and the Nerve Response Score¹².

Withings Body Scan vs BodyScan 2: 13 frequencies or 3

Withings says the BodyScan 2 measures at 13 frequencies up to 800 kHz, against 3 up to 250 kHz on the Body Scan^{9, 11}. It also lists 12 electrodes against 8, six body zones against five, and an SpO2 sensor^{9, 11}. Both have a 6-lead ECG and a 2-year guarantee^{4, 9}.

More frequencies is a spec, not a result. Withings gives no accuracy comparison between the two, and no independent study of either was found^{7, 9}. Heart Age and Glucose Resilience on the BodyScan 2 need Withings+, and Withings’ FAQ of July 12, 2026 marked Glucose Resilience as coming soon^{9, 10}. If you want an ECG and zone readings, the Body Scan covers most of it for $100 less.

Are Withings scales accurate against DEXA?

Withings says its 2025 study with the sports-health center Mon Stade compared the Body Scan with DEXA in 80 people⁷. It reports correlations of 0.99 for total fat mass and 0.98 for lean mass⁷. Withings’ own footnote says that doesn’t mean one reading will land within 1% of DEXA⁸. This is a company report, not a peer-reviewed paper, and the pages give no bias or limits of agreement^{7, 8}.

No independent study tested the Body Smart, Body Scan or BodyScan 2 that we could find. A 2021 hospital study in Paris tested an earlier Withings scale, the Body Cardio, against DEXA in 48 patients. Its median fat-mass error was 3.7 kg too low²⁰. A 2023 lab study of 73 healthy adults found the Body Cardio read 0.4 percentage points low on average, with a total error of 5.8 points²¹. Neither describes the current scales.

For weight, Withings lists 0.1 lb steps on all three^{1, 4, 9}. For why body-fat readings are best used as a trend, see are smart scales worth it. For other brands, see best smart scales compared.

Is a Withings scale FDA cleared?

Only the Body Scan’s ECG function, and only under its Scan Monitor 2.0 name. The FDA cleared that on August 23, 2023 (K230812, Class II, electrocardiograph)¹⁷. The indications say it records and displays a two-channel ECG and detects atrial fibrillation when prescribed or used under the care of a physician. It is for adults¹⁸.

The clearance covers the ECG only, not body composition, vascular age or the electrodermal score^{17, 18}. openFDA lists no record named BodyScan 2¹⁹. Withings says the BodyScan 2’s US ECG function is called Scan Monitor 2.0, but that clearance’s summary names the Body Scan, so we couldn’t confirm it covers the new hardware^{10, 18}. Withings’ Body Smart page claims no clearance¹. A database search isn’t proof that no listing exists, and a clearance isn’t a finding that a scale improves health.

What a Withings scale costs with Withings+

Baseline data and trends stay free in its app, and Withings+ is optional at $9.95 a month or $99.50 a year¹³. Accounts created on or after October 13, 2026 need an active Withings+ subscription to send data to Apple Health, Health Connect and similar apps¹⁴. Older accounts are unaffected¹⁴.

If you need that sync on a new account, three years of the yearly plan add $298.50. That brings the Body Smart to $428.45, the Body Scan to $798.45 and the BodyScan 2 to $898.45 before tax. Without the sync you can skip the plan. Withings+ adds extras such as a cardiologist review of an ECG within 24 hours, and on the BodyScan 2 it also adds Heart Age, and Glucose Resilience once released (Withings marked it coming soon)^{9, 10, 13}.

The Body Smart takes four AAA batteries, and Withings doesn’t price replacements¹. The Body Scan and BodyScan 2 charge over a cable, so they have no battery cost.

Pacemakers, implants and pregnancy

All three send a small electrical current through your body. Withings says not to use the Body Smart or Body Scan if you wear a pacemaker or other internal medical device, unless the body-fat and heart-rate readings (Body Smart) or the impedance measurement (Body Scan) are turned off in the app^{3, 6}. For the BodyScan 2, Withings says people with pacemakers, ICDs or other implanted electronic devices must not use the body composition function¹¹.

Withings says the Body Smart and Body Scan haven’t been tested or validated in pregnancy and recommends turning impedance off. For the BodyScan 2 it says pregnant people should not use the device or should turn the feature off^{3, 6, 9, 27}. On metal implants, Withings says a stent doesn’t affect the Body Smart’s measurement. It advises talking to a doctor first for the Body Scan, and we found no stent guidance for the BodyScan 2^{3, 6}.

Turning the measurement off applies to everyone linked to the scale³. This is Withings’ own guidance, not a clinical finding. Ask your doctor before using any of them with an implanted device.

Warranty and returns on Withings scales

All three list a 2-year quality guarantee^{1, 4, 9}. Withings’ US terms of sale describe legal warranties under French law and give no US warranty terms, so the conditions and claim steps are unknown¹⁶.

Withings’ refund policy gives 30 days. Its Body Smart FAQ counts them from the order date, while one clause of the policy counts from receipt^{2, 15}. The product pages say free shipping and returns, but the policy says you pay return shipping after a withdrawal, so check the label cost first^{1, 15}. Withings+ payments already made are non-refundable, with an exception if you weren’t told about automatic renewal¹⁵.

Before you buy a Withings scale

All three need the Withings app on iOS 18 or later, or Android 12 or later, and can’t be set up from a computer^{1, 4, 9}. US ECG activation on the Body Scan and BodyScan 2 needs your state of residence and a US phone number, and 6-lead recordings show only in the mobile apps^{22, 26}. The BodyScan 2’s page lists Bluetooth as coming soon, while Withings’ installation guide pairs it over Bluetooth, so check that before relying on it⁹. Withings’ BodyScan 2 pages also disagree on the handle display size.

If you also track blood pressure, Withings sells a cuff that syncs to the same app. The Omron Platinum vs Evolv vs 3 Series comparison includes the Withings BPM Connect.

Sources

1. Body Smart Black Withings · manufacturer
2. Body Smart FAQ Withings Support · manufacturer
3. Body Smart: frequently asked questions about safety Withings Support · manufacturer
4. Body Scan Black Withings · manufacturer
5. Body Scan: frequently asked questions Withings Support · manufacturer
6. Body Scan: frequently asked questions about safety Withings Support · manufacturer
7. Body Scan: comparing Body Scan to a DEXA scan Withings Support · manufacturer
8. Body Scan vs. DEXA scan: Withings' connected scale shows 99% correlation Withings · manufacturer
9. BodyScan 2 Black Withings · manufacturer
10. BodyScan 2: frequently asked questions Withings Support · manufacturer
11. BodyScan 2: frequently asked questions about segmental body composition Withings Support · manufacturer
12. BodyScan 2: Daily Scan and Longevity Scan Withings Support · manufacturer
13. Withings+ Withings · manufacturer
14. Partner apps: frequently asked questions about Apple Health Withings Support · manufacturer
15. Return and refund policy Withings · manufacturer
16. Terms of sale Withings · manufacturer
17. 510(k) premarket notification K230812: Withings Scan Monitor 2.0 U.S. Food and Drug Administration · regulator
18. K230812 clearance letter, indications for use and 510(k) summary U.S. Food and Drug Administration · regulator
19. openFDA 510(k) records for applicant Withings U.S. Food and Drug Administration (openFDA) · regulator · data file
20. Accuracy of smart scales on weight and body composition: observational study JMIR mHealth and uHealth (Frija-Masson J et al.), 2021
21. Assessing the reliability and cross-sectional and longitudinal validity of fifteen bioelectrical impedance analysis devices British Journal of Nutrition (Siedler MR et al.), 2023
22. BodyScan 2: activating ECG (U.S. only) Withings Support · manufacturer
23. BodyScan 2: release note, firmware 1731 Withings Support · manufacturer
24. BodyScan 2: release note, firmware 1781 Withings Support · manufacturer
25. Body Smart: learn more about body composition and bioelectrical impedance analysis (BIA) Withings Support · manufacturer
26. Body Scan: activating ECG (U.S. only) Withings Support · manufacturer
27. BodyScan 2: bioelectrical impedance analysis (BIA) Withings Support · manufacturer