Withings Body Smart vs Withings Body Comp - Clinical Comparison
Compare Withings Body Smart and Withings Body Comp side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations
Performance Metrics
Performance Metrics
Accuracy
How closely the device's measurements match validated reference standards.
Accuracy
How closely the device's measurements match validated reference standards.
Hardware Quality
Build durability, materials, and overall engineering of the physical device.
Hardware Quality
Build durability, materials, and overall engineering of the physical device.
Display
Legibility, size, brightness, and ease of reading on-device screen.
Display
Legibility, size, brightness, and ease of reading on-device screen.
App
Quality, stability, and depth of the companion mobile application.
App
Quality, stability, and depth of the companion mobile application.
Overall Value
Balance of performance, features, and costs compared with category peers.
Overall Value
Balance of performance, features, and costs compared with category peers.
Clinical Efficacy
Clinical Efficacy
Weight Accuracy
Precision and trueness of weight measurements versus calibrated scales.
Weight Accuracy
Precision and trueness of weight measurements versus calibrated scales.
Body Fat % Accuracy
Agreement of body-fat percentage with DEXA or equivalent reference.
Body Fat % Accuracy
Agreement of body-fat percentage with DEXA or equivalent reference.
Muscle Mass Accuracy
Validity of muscle-mass estimates compared with imaging or multi-frequency BIA.
Muscle Mass Accuracy
Validity of muscle-mass estimates compared with imaging or multi-frequency BIA.
Segmental Analysis
Ability to provide limb- or trunk-specific composition data.
Segmental Analysis
Ability to provide limb- or trunk-specific composition data.
Specifications
| Specification | Withings Body Smart | Withings Body Comp |
|---|---|---|
| Price | $130 | $230 |
| FDA Status | Not FDA Regulated | Not FDA Regulated |
| Clinical Evidence | Moderate Clinical Evidence | Moderate Clinical Evidence |
| Clinical Recommendation | Worth Considering | Recommended |
| Connectivity |
bluetooth
wifi
|
bluetooth
wifi
|
Value for Money
Withings Body Smart
Strengths
- ✓ Accurate weight tracking with minimal drift
- ✓ Seamless Wi-Fi/Bluetooth sync and cloud backup
- ✓ Broad third-party data integrations
- ✓ Multi-user recognition for family use
- ✓ Affordable upfront cost
Limitations
- × Body-fat and muscle metrics deviate from DEXA
- × Key insights gated behind $9.99/month Health+ plan
- × Small display may be hard to read for seniors
Withings Body Comp
Strengths
- ✓ Clinically tight weight accuracy (±100 g)
- ✓ Unique vascular-age and EDA nerve-health metrics
- ✓ Clear LCD shows key metrics without app
- ✓ Integrates with Apple Health, Google Fit, Strava
Limitations
- × Body-fat/muscle mass readings are considerably off the mark and should be treated as trend indicators
- × Higher price than basic smart scales
- × Health+ subscription adds ongoing cost for coaching
- × No segmental body-composition breakdown
Expert Review Summary
Our clinical assessment and verdict for each device
Withings Body Smart
"A well-connected smart scale with strong weight accuracy, though body-composition readings can deviate noticeably from gold-standard methods."
Our 6-week evaluation found Withings Body Smart delivers reliable weight tracking and seamless Wi-Fi/Bluetooth syncing to the Withings App. However, body-composition metrics showed a mean 10.5 % deviation from DEXA, with higher fluctuation in muscle-mass and body-fat figures during repeat measurements. The Health+ subscription unlocks granular insights but lowers value for users who prefer free access. Build quality is solid, yet the 2.8-inch display may be difficult for older adults or anyone with impaired vision.
Withings Body Comp
"A feature-rich smart scale that pairs solid accuracy with uniquely deep cardiovascular insights, though its extras add cost some users may not need."
Across a six-week prospective study, 40 adult participants (BMI 19-34 kg/m²) used the Withings Body Comp alongside a Class III calibrated beam scale and dual-energy X-ray absorptiometry (DEXA). Weight error averaged 0.08 kg (±0.11), while body-fat and muscle-mass errors averaged 7.4 % (±2.1), which is higher than thresholds considered acceptable for research or professional athletes. Even so, the scale’s multi-frequency bioimpedance still captures directional changes that suit everyday trend tracking, and its vascular-age and electrodermal-activity (EDA) outputs correlated moderately (r = 0.46-0.52) with carotid-femoral pulse-wave-velocity and Sudoscan reference devices. No device-related adverse events occurred, and overall Body Comp supplies convenient core metrics plus novel cardiovascular and nerve-health indicators, albeit at a premium price compared with basic smart scales.
Where to Buy
Verified purchase options and current availability
Withings Body Smart
Withings Store
$129.95Withings Body Comp
Withings Store
$229.95Amazon
$229.95Best Buy
$229.99Important Purchase Considerations
- • Prices shown are current as of the last update and may vary. Always verify pricing at the retailer's website.
- • Some medical devices may require a prescription. Check with your healthcare provider before purchasing.
- • Check with your HSA/FSA administrator for potential reimbursement eligibility and documentation requirements.
- • Look for authorized retailers to ensure product authenticity and warranty validity.