Best smart scales compared: Withings Body Smart, Wyze Scale X, Renpho Elis 1, Garmin Index S2 and Body Scan

Which smart scale should you buy?

Smart scales list from $24.99 for the Renpho Elis 1 to $599.95 for the Withings BodyScan 2^{6, 18}. The extra money buys body-composition extras, not a better weight reading. In a French hospital study of three other consumer scales, median weight errors against DEXA were 0.3 kg or less, while median fat-mass errors ran 2.2 to 4.4 kg too low²³. So buy the cheapest scale that syncs where you need it.

Choose the Renpho Elis 1 ($24.99) if price comes first, since it syncs to Apple Health and Fitbit and Renpho says its app is completely free^{6, 8}. Choose the Wyze Scale X ($38.98) if you also need Health Connect sync or want body fat shown on the scale’s display, still with no plan to pay for⁴. Choose a Withings or Garmin scale only if you want its app, Wi-Fi sync or a feature the two cheaper scales lack. We found no independent study of any of the six scales’ body-fat readings.

Six smart scales side by side

Prices are US list prices on each maker’s store, before tax, as recorded in our reviews on November 6, 2026. Withings+ and Garmin Connect+ are optional plans and aren’t in the prices. Figures come from each maker’s own pages, manuals and policies, not our measurements.

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

Which scale fits which need

Each suits a different need, and this isn’t a ranking. Start with the app you want your weight to land in, then look at price.

• The lowest price: Renpho Elis 1. It lists at $24.99 and syncs to Apple Health, Fitbit, Samsung Health and MyFitnessPal^{6, 8}. The catch: only weight shows on the scale, Renpho gives no body-fat accuracy figure, and free shipping starts above the scale’s price⁶.
• Low price and Apple Health or Health Connect sync: Wyze Scale X. It lists at $38.98, and its weight-only mode switches the current off⁴. The catch: Wyze gives no accuracy figure that names the Scale X, and returns are accepted only for scales bought from Wyze^{4, 5}.
• The Withings app with Wi-Fi sync: Withings Body Smart. It lists at $129.95 and syncs without your phone nearby¹. The catch: accounts created on or after October 13, 2026 need Withings+ to send data to Apple Health or Health Connect²¹.
• Garmin Connect users or a larger household: Garmin Index S2. It lists at $199.99 and holds up to 16 users, and Garmin says its batteries last up to 9 months¹¹. The catch: Garmin gives no accuracy figure, and every extra user needs a Garmin Connect account¹¹.
• Segmental readings and an ECG: Withings Body Scan. It lists at $499.95 with a handle that adds readings for each arm, each leg and the torso¹⁵. The catch: Withings’ 99% DEXA figure comes from its own 80-person study¹⁶ and the scale costs $370 more than the Body Smart^{1, 15}.
• The newest Withings hardware: Withings BodyScan 2. It lists at $599.95 and adds a handle display and an SpO2 sensor^{18, 19}. The catch: its pages disagree on the display size and on whether Bluetooth works yet^{18, 19}.

What each scale reports, and what needs a handle

Every scale here estimates body composition with a small current through your body. The cheapest two show only weight, or weight and body fat, on the scale itself and keep the rest in the app^{4, 6}. The handle models read your arms as well as your legs.

Are the body-fat readings accurate?

No independent study of any of these six scales turned up. The studies we found tested other models or scales with no model named, so none of the figures below describe a scale on this page.

A 2023 laboratory study of 73 healthy adults compared 15 body-fat devices with a four-compartment reference model²⁴. Average errors ran from 3.5 percentage points too low to 11.7 points too high²⁴. A Wyze Scale with no model named read 3.6 points high, and a RENPHO scale with no model named read 1.4 points low, with a 7.2-point total error²⁴. Repeat readings agreed closely, so a scale can be consistent and still wrong²⁴.

Makers publish little. Withings says the Body Scan’s total fat mass correlates at r = 0.99 with DEXA in an internal study of 80 people, but says that doesn’t mean one reading lands within 1% of DEXA¹⁶. Wyze and Garmin give no accuracy figure that names their scales, and Renpho gives none for body fat^{4, 7, 11}. Read these numbers as rough trends, as our smart scales evidence page explains.

Subscriptions and app rules

Withings is the one maker with a rule that changes what you pay. Accounts created on or after October 13, 2026 need an active Withings+ subscription to send data to Apple Health, Health Connect and similar apps²¹. Older accounts are unaffected, and baseline data and trends stay free in the Withings app^{20, 21}.

Withings+ costs $9.95 a month or $99.50 a year²⁰. If you need Apple Health or Health Connect sync on a new account, a Body Smart with three years of the yearly plan comes to $428.45, against $38.98 for a Wyze Scale X, which lists no subscription^{1, 4, 20}. Renpho says its app is completely free⁸. Garmin says existing Garmin Connect features stay free, and its optional Connect+ plan is $69.99 a year²⁵.

Withings Body Scan or BodyScan 2: the short answer

The BodyScan 2 lists at $599.95 and the Body Scan at $499.95^{15, 18}. For the extra $100, Withings says you get six body zones instead of five, 13 measurement frequencies instead of 3, a handle display and an SpO2 sensor^{18, 19}. Both have a 6-lead ECG and a 2-year guarantee^{15, 18}. The FDA cleared only the Body Scan’s ECG function, not body composition¹⁷.

Withings’ 99% DEXA figure comes from its study of the earlier Body Scan, and no independent validation of either was found^{16, 18}. If you want an ECG and zone readings, the Body Scan covers most of it for $100 less. For the full Withings comparison, including the Body Smart, FDA status and Withings+ costs, see Withings scales compared.

Pacemakers, implants and pregnancy

These scales send a small current through your body. Withings says not to use the Body Smart or Body Scan with a pacemaker or other internal medical device unless the body-fat and heart-rate measurements are turned off in the app^{3, 26}. Withings says people with pacemakers or other implanted electronic devices must not use the BodyScan 2’s body-composition function^{19, 27}. Garmin says not to use its scale with a pacemaker, and doesn’t say whether its weight-only option stops the current¹².

Wyze says its weight-only mode switches the current off, and Renpho advises weighing only, with shoes on, if you have a pacemaker, metal implants or are pregnant^{4, 8}. Ask your doctor before using any of them with an implanted device. This is each maker’s own guidance, not a clinical finding.

Before you buy any of them

Check the sync first. Confirm the scale reaches the app you actually use, and read the Withings+ rule above if you need Apple Health or Health Connect²¹. Then check the floor and your feet. Wyze says its scale works on hard, flat floors, and body composition needs bare feet on the electrodes with Wyze, Renpho and Garmin^{4, 6, 11}.

Weighing yourself regularly inside a weight-management program is the part of a smart scale that trials support. Our smart scales evidence page covers that, and the health monitors guide pairs the scales with blood pressure monitors.

Sources

1. Body Smart Withings · manufacturer
2. Body Smart FAQ Withings · manufacturer
3. Body Smart: frequently asked questions about safety Withings · manufacturer
4. Wyze Scale X Wyze · manufacturer
5. Return policy Wyze · manufacturer
6. Elis 1 Smart Body Scale Renpho · manufacturer
7. Body fat scale product manual Renpho · manufacturer
8. Smart body scales Renpho · manufacturer
9. Warranty terms and conditions Renpho · manufacturer
10. Shipping and returns Renpho · manufacturer
11. Index S2 Smart Scale Garmin · manufacturer
12. Index S2 owner's manual Garmin · manufacturer
13. Consumer Limited Warranty Garmin · manufacturer
14. Shipping and returns Garmin · manufacturer
15. Body Scan Withings · manufacturer
16. Body Scan: comparing Body Scan to a DEXA scan Withings · manufacturer
17. 510(k) K230812: Withings Scan Monitor 2.0 U.S. Food and Drug Administration · regulator
18. BodyScan 2 Withings · manufacturer
19. BodyScan 2: frequently asked questions Withings · manufacturer
20. Withings+ Withings · manufacturer
21. Partner apps: frequently asked questions about Apple Health Withings · manufacturer
22. Refund policy Withings · manufacturer
23. Accuracy of smart scales on weight and body composition: observational study JMIR mHealth and uHealth (Frija-Masson J et al.), 2021
24. Assessing the reliability and cross-sectional and longitudinal validity of fifteen bioelectrical impedance analysis devices British Journal of Nutrition (Siedler MR et al.), 2023
25. Garmin Connect+ announcement Garmin · manufacturer
26. Body Scan: frequently asked questions about safety Withings · manufacturer
27. BodyScan 2: learn more about segmental body composition Withings · manufacturer