Head to head
Withings Body Smart vs Garmin Index S2 (2026)
Withings Body Smart vs Garmin Index S2: app depth and modes against Garmin ecosystem fit and profile count, compared honestly.
#1 in our rankings · Best overall
Withings Body Smart Scale
Best for: Most buyers who want reliable composition tracking, automatic syncing, and an app that explains trends clearly.
#3 in our rankings · Best for Garmin users
Garmin Index S2 Smart Scale
Best for: Garmin watch owners who want weight and composition inside Garmin Connect alongside training data.
Our recommendation
Buy the Withings Body Smart if you want the best general smart scale: more modes, a more polished health app, and composition breadth. Buy the Garmin Index S2 if your health data already lives in Garmin Connect and you want weight trends there, or if your household needs more than 8 profiles. Both sync over Wi-Fi and track trends well; the choice is about ecosystem, not measurement.
App and ecosystem
The Body Smart lives in Health Mate, a dedicated health app with clear trends and modes for pregnancy, babies, and athletes. The Index S2 lives in Garmin Connect, where weight sits next to training and sleep data. Buyers who train with Garmin gain context from the Index S2; buyers who just want health tracking gain polish from the Body Smart.
Profiles and modes
The Index S2 supports 16 profiles against the Body Smart's 8, which wins for very large households. The Body Smart counters with athlete, pregnancy, baby, and eyes-closed modes, which the Garmin lacks entirely, so families and life-stage buyers get more from Withings.
Metrics and syncing
Both sync over Wi-Fi and cover weight, BMI, fat, muscle, water, and bone mass. The Body Smart adds visceral fat detail and a more granular trend view, while the Index S2 adds a weather display on the scale itself. Neither offers segmental data or heart readings, so health-depth buyers should look at the Body Scan instead.
Choose Withings Body Smart Scale if…
- You want the best general health app and modes
- You need pregnancy, baby, or eyes-closed modes
- You do not use Garmin Connect
Choose Garmin Index S2 Smart Scale if…
- Your training and health data live in Garmin Connect
- Your household needs more than 8 profiles
- You want weight next to training load and sleep
Spec-by-spec comparison
| Spec | Withings Body Smart Scale | Garmin Index S2 Smart Scale |
|---|---|---|
| Price tier | Mid-range | Premium |
| Connectivity | Wi-Fi and Bluetooth | Wi-Fi |
| Metrics | Weight, BMI, body fat, muscle mass, visceral fat, water, bone mass | Weight, BMI, body fat, skeletal muscle mass, bone mass, body water |
| User profiles | Up to 8 users | Up to 16 users |
| Modes | Athlete, pregnancy, baby, eyes-closed | - |
| Weight limit | 400 lb | - |
| Battery life | - | Up to 9 months, 4 AAA batteries |
| Extras | - | Weather display, carpet feet included |
| Best for | Most buyers who want reliable composition tracking, automatic syncing, and an app that explains trends clearly. | Garmin watch owners who want weight and composition inside Garmin Connect alongside training data. |
| Skip if | You only want weight and BMI, or you refuse to create an app account to see your history. | You do not use Garmin Connect, or you want Apple Health syncing without a workaround. |
Strengths and limitations
Withings Body Smart Scale
Strengths
- Wi-Fi syncing means weigh-ins land in the app without the phone nearby, so the scale works for the whole household, not just the phone owner.
- Four modes, athlete, pregnancy, baby, and eyes-closed, cover life stages and preferences that most rivals ignore entirely.
- Body composition covers fat mass, muscle mass, visceral fat, water, and bone mass, giving a fuller trend picture than weight alone.
Limitations
- Body composition figures are impedance estimates, so day-to-day swings reflect hydration and timing as much as body change.
- Full history and trends live in the Health Mate app, so buyers who dislike app accounts get less value from the scale.
- The premium over budget scales buys polish and modes rather than a fundamentally different weight measurement.
Garmin Index S2 Smart Scale
Strengths
- Wi-Fi syncing sends weigh-ins straight to Garmin Connect, so weight trends sit next to running, cycling, and sleep data in one place.
- Sixteen user profiles suit large households and teams far better than the 8-profile limit on most rivals.
- A bright, high-contrast display with a weather readout makes the morning weigh-in quick to read, even in a dim bathroom.
Limitations
- No direct Apple Health syncing, so Apple users need a third-party bridge or accept Garmin Connect as the home for their data.
- Composition metrics are fewer than Withings, with no segmental breakdown or heart readings, so health-depth buyers get less.
- The premium outlay is hard to justify outside the Garmin ecosystem, since the scale itself measures no differently from cheaper rivals.
How they fit the wider field
- Withings Body Smart Scale: ranked #1 (Best overall) in The Best Smart Scales. Read the full Withings Body Smart Scale review.
- Garmin Index S2 Smart Scale: ranked #3 (Best for Garmin users) in The Best Smart Scales. Read the full Garmin Index S2 Smart Scale review.
Neither one quite right? The full rankings cover 10 picks matched to different buyers.
Questions, answered
Which measures weight more accurately?
Both measure weight reliably, and any difference between them is smaller than daily weight fluctuation from water and food. Choose on ecosystem and features, not on a claimed accuracy edge, since neither maker publishes a meaningful accuracy advantage for weight itself.
Can I use both apps with one scale?
Not directly: each scale syncs to its own app, though both can forward data to Apple Health or Google Fit where supported. The Garmin has no direct Apple Health route, so Apple users leaning Garmin should check their sync path before buying.
Which is better for a family of four?
Either, since both cover four profiles easily. The Body Smart wins for families with babies or pregnancies thanks to its modes, while the Index S2 wins only if the family already trains with Garmin.