withings
Pick Withings if
- Long-term body composition tracking
- Blood pressure or sleep apnea screening
- You prefer scale + BP monitor over a watch
Withings vs Garmin
Withings is medical-grade body composition, blood pressure, sleep apnea, AFib. Garmin is athletic 24/7: Body Battery, stress, HRV, training load. They share the everyday heart, sleep and activity baseline, but each owns a different specialty, Withings the body, Garmin the training day.
withings
29/33signals its devices cover
Scale, BP monitor, watch
vs
GARMIN
27/33signals its devices cover
Athletic / outdoor watch
QUICK VERDICT
Withings and Garmin are the most complementary live pair in MyBodyAI. Withings goes deepest on the body (muscle, water, visceral fat, BP, temperature, AFib, sleep apnea); Garmin reaches weight, body fat, bone mass, muscle mass and hydration through the Index S2 scale and stops there. Garmin owns the day (Body Battery, stress, sleep, HRV, activities). Combined they cover 33 of 33 tracked signals. They share the everyday heart, sleep and activity baseline, but each owns a different specialty, Withings the body, Garmin the training day.
COVERAGE BY CATEGORY
Where each brand actually wins
Per-category breakdown of health signals exposed by each vendor's developer API. The number is breadth, not quality.
SIGNAL BY SIGNAL
The full matrix
| Signal | Withings | Garmin |
|---|---|---|
| Heart & Vitals | ||
| Resting HR | ✓ | ✓ |
| HRV | ✓ | ✓ |
| SpO2 | ✓ | ✓ |
| Respiratory Rate | ✓ | ✓ |
| Skin Temperature | ✓ | ✓ |
| Body Temperature | ✓ via BeamO | — |
| Blood Pressure | ✓ via BPM Core | ✓ via Index BPM |
| ECG recording | ✓ | ✓ |
| AFib detection | ✓ | ✓ |
| Vascular age | ✓ via Body Scan 2 | — |
| Sleep | ||
| Sleep duration | ✓ | ✓ |
| Sleep stages | ✓ | ✓ |
| Sleep score | ✓ | ✓ |
| Sleep efficiency | ✓ | — |
| Sleep apnea index | ✓ | — |
| Activity | ||
| Steps | ✓ | ✓ |
| Active minutes | ✓ | ✓ |
| Calories | ✓ | ✓ |
| Activities | ✓ | ✓ |
| Floors climbed | ✓ | ✓ |
| Distance | ✓ | ✓ |
| Fitness & Recovery | ||
| VO2max | ✓ | ✓ |
| Training load | — | ✓ |
| Recovery / Readiness | — | ✓ |
| Body Battery | — | ✓ |
| Stress (continuous) | — | ✓ |
| Cardiovascular age | ✓ via Body Scan 2 | — |
| Body Composition | ||
| Weight | ✓ via Body Scan 2 | ✓ via Index S2 |
| Body fat % | ✓ via Body Scan 2 | ✓ via Index S2 |
| Muscle mass | ✓ via Body Scan 2 | ✓ via Index S2 |
| Hydration | ✓ via Body Scan 2 | ✓ via Index S2 |
| Bone mass | ✓ via Body Scan 2 | ✓ via Index S2 |
| Visceral fat | ✓ via Body Scan 2 | — |
Verified against vendor developer documentation and MyBodyAI backend code. This counts what a brand's API exposes, which is not the same question as what one device measures: the device catalog scores each model's own hardware, so its numbers differ.
Current Withings models Body Scan 2 (2026), BodyFit (2026), BPM Vision (2025), BeamO (2025), all 14 Withings devices
Current Garmin models CIRQA Smart Band (2026), Forerunner 170 (2026), Forerunner 70 (2026), fenix 9 (AMOLED, 47mm) (2026), all 30 Garmin devices
WHICH ONE FOR YOU
Pick the one that matches your priority
GARMIN
Pick Garmin if
- You want 24/7 wrist data
- Body Battery and stress matter
- GPS workouts and floors climbed matter
withings+GARMIN
Pick both if
- Garmin watch 24/7 for the active signals
- Withings scale + BP monitor for body and clinical
- Best complementary live pair: 33/33 unique signals
FAQ
Frequently asked questions
Can I use Withings and Garmin together?
Yes, and they complement each other. Withings measures what a watch cannot on its own, body composition from a smart scale, blood pressure, and on some models an ECG. Many people keep Garmin for daily tracking and add a Withings device for the rest.
Which one tracks more health signals?
Withings tracks 29 of the 33 signals I compare, Garmin tracks 27. The matrix above breaks it down by category, and they often win different categories.
Which one should I get first?
Start with whichever covers your main goal. For daily heart rate, sleep and workouts, go with Garmin. For weight, body composition and blood pressure, go with Withings. You can add the other later.
How did you compare Withings and Garmin?
From each brand's official spec sheets and support pages, cross-checked against independent hands-on reviews (DC Rainmaker, the5krunner, Tom's Guide). Signal-level edge cases are noted in the matrix, not hidden behind a single check mark.
WHERE TO BUY
Check prices at the source
Links to each vendor's store. None of them changed any pick above.
MORE COMPARISONS
Explore other pairs
OPTIONAL: IF YOU WANT MORE
Want one place that merges both feeds?
MyBodyAI is what these signals feed: it pulls from any combination of the brands above and derives Biological Age and 12 health indices from the raw numbers. Free to try, no card. It's optional, the comparison above stands on its own.
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