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Garmin Index S2 vs Withings Body Smart

Compare features and trade-offs. Catalog scores are editorial assessments, not customer review averages or proof of hands-on testing.

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Facts and prices checked

Withings Body Smart for most people, Index S2 for Garmin users

We rank the Withings Body Smart ahead of the Garmin Index S2. Both sync over Wi-Fi and show results on a color display. The Body Smart costs $70 less at list price, runs longer on its batteries, adds standing heart rate and BMR to its metrics, and offers Pregnancy and Baby, Athlete, and Eyes Closed modes. The Index S2 is still the better fit if you already track workouts in Garmin Connect, since its readings land alongside your watch data, and it supports up to 16 users. If you do not use Garmin devices, the Body Smart is the better value.

Key differences

Garmin Index S2Withings Body Smart
Price$199.99 on Garmin's US store$129.95 on Withings' US store
App ecosystemSyncs to Garmin Connect alongside Garmin watch dataSyncs to the Withings app; optional Withings+ at $9.95 a month or $99.50 a year
ConnectivityWi-Fi sync; Garmin lists BLE and ANT compatibilityWi-Fi or Bluetooth; Withings says readings sync without your phone nearby
UsersUp to 16 user profilesRecognizes up to 8 users
MetricsWeight, BMI, body fat, skeletal muscle mass, bone mass, and body water (body composition is manufacturer-estimated)Weight, fat, muscle, water, standing heart rate, and BMR (body composition is manufacturer-estimated)
BatteryUp to 9 months on 4 AAA batteriesOver 15 months on replaceable batteries
Display and modesColor display that reviewers say can show a weight trend graph and the weather; layout is customizable in the appHigh-resolution color display with Athlete, Pregnancy and Baby, and Eyes Closed modes

Which one for your seat and trip

Garmin watch owner

Pick: Garmin Index S2

Readings go straight into Garmin Connect with your activity data.

Apple, Fitbit, or no wearable

Pick: Withings Body Smart

You avoid paying extra for Garmin ecosystem features, and it costs $70 less at list price.

Large household

Pick: Garmin Index S2

It supports up to 16 profiles versus 8 on the Body Smart.

Weighing a baby or tracking during pregnancy

Pick: Withings Body Smart

It has a dedicated Pregnancy and Baby mode.

Choose Garmin Index S2 if…

  • you already use a Garmin watch and want weight data in Garmin Connect next to your training.
  • more than 8 people in your home will use one scale, since it supports up to 16 profiles.
  • you like a customizable display that can show a weight trend graph at weigh-in.

Choose Withings Body Smart if…

  • you want a Wi-Fi scale for less money, at $129.95 versus $199.99.
  • you want to change batteries less often, with Withings rating it at over 15 months.
  • you want household modes like Pregnancy and Baby or Eyes Closed, which hides the number at weigh-in.
⚖️GI

Garmin Index S2

Garmin

$179.00 – $199.00

8.7
Excellent

Pros

  • +Seamless Garmin Connect integration
  • +Perfect Garmin ecosystem integration
  • +Color display shows trends on-scale
  • +Color display shows trends
  • +Color display with trends

Cons

  • −Best value only for Garmin users
  • −Premium price for a scale
  • −Expensive for a bathroom scale
  • −Pricey compared to competitors
  • −Best value only for Garmin watch users

Don't buy if

  • ⚠ The scale's primary value is Garmin Connect integration; if you don't use a Garmin watch, you're paying a premium for ecosystem benefits you won't use.
  • ⚠ Requires a Garmin Connect account for setup and full functionality; no standalone mode available.
  • ⚠ This scale provides the most value within the Garmin ecosystem; users of Apple Watch or Fitbit may find better integration elsewhere.
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⚖️WB

Withings Body Smart

Withings

$120.00 – $130.00

9.4
Excellent
Best Overall

Pros

  • +Wi-Fi sync, no phone needed nearby
  • +Wi-Fi auto-sync to health apps
  • +Full body composition analysis
  • +Broad health platform integration
  • +Automatic Wi-Fi sync to health apps

Cons

  • −Body fat accuracy varies by user
  • −Requires Wi-Fi for smart features
  • −BIA accuracy varies by hydration level
  • −Requires initial Wi-Fi setup
  • −Body fat accuracy varies by hydration

Don't buy if

  • ⚠ BIA (bioelectrical impedance) body fat measurements can vary by 3-5% based on hydration, meal timing, and time of day; use trends, not individual readings.
  • ⚠ Bioelectrical impedance measurements should not be used by individuals with pacemakers or other implanted medical devices.
  • ⚠ Bioelectrical impedance measurements require bare feet on the metal sensors; socks or shoes will prevent accurate body composition readings.
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Score Comparison

MetricGarmin Index S2Withings Body Smart
Trust Score8.79.4 ✓
Expert Score8.79.6 ✓
User Sentiment8.69.3 ✓
Value Score9.1 ✓8.2
Complaint Risk9.0 ✓9.5
Price$179.00 – $199.00$120.00 – $130.00

Common questions

Do I need a Garmin watch to use the Index S2?

No, but you need a Garmin Connect account and the app, and a reviewer notes each user needs the app on their own phone. Its main advantage is putting weight data alongside Garmin watch data, so it makes less sense without one.

Does the Withings Body Smart need a subscription?

No. Withings says baseline metrics and trends stay free in its app. Withings+ is optional and costs $9.95 per month or $99.50 per year after a free first month.

Which scale has longer battery life?

Withings says the Body Smart runs over 15 months on its batteries. Garmin rates the Index S2 at up to 9 months on 4 AAA batteries. Neither is rechargeable.

Are the body composition readings comparable?

Both estimate body composition from a small electrical signal through bare feet, and readings vary with hydration and time of day. Treat the numbers as trends, and avoid switching between brands mid-tracking, since their estimates differ.

Can both scales sync without my phone nearby?

Yes. Both upload readings over Wi-Fi. Withings also supports Bluetooth pairing, and Garmin lists BLE and ANT compatibility for the Index S2.

What we couldn't confirm

  • Withings' full metric list and maximum weight capacity were not confirmed on a page we could open.
  • Withings' Apple Health and Google Fit integrations were not confirmed on the pages we could open.

Research-based comparison from manufacturer specifications and published reviews, not a PickClarity hands-on test. Sources checked November 2, 2026: