WHOOP
Pick WHOOP if
- You already train by strain numbers
- No display is a feature, not a bug
- Monthly subscription model is acceptable
WHOOP vs Garmin
WHOOP is a screenless strap on a monthly subscription, reading 19/33 signals — recovery, strain, sleep, HRV, SpO2. Garmin is a watch you buy once, reading 27/33 including Body Battery and 24/7 stress.
WHOOP
19/33signals its devices cover
Screenless strap
vs
GARMIN
27/33signals its devices cover
Athletic / outdoor watch
QUICK VERDICT
WHOOP and Garmin both target serious training — but the value model is opposite. WHOOP charges monthly and prefers no display. Garmin charges once and gives you a screen, GPS, Body Battery, ECG, floors. If you already train by strain numbers, WHOOP fits the workflow. If you want the broadest signal stack and one-time payment, Garmin.
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 | WHOOP | Garmin |
|---|---|---|
| Heart & Vitals | ||
| Resting HR | ✓ | ✓ |
| HRV | ✓ | ✓ |
| SpO2 | ✓ | ✓ |
| Respiratory Rate | ✓ | ✓ |
| Skin Temperature | ✓ | ✓ |
| Body Temperature | — | — |
| Blood Pressure | ✓ | ✓ via Index BPM |
| ECG recording | ✓ | ✓ |
| AFib detection | ✓ | ✓ |
| Vascular age | — | — |
| 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 | — | — |
| Body Composition | ||
| Weight | — | ✓ via Index S2 |
| Body fat % | — | ✓ via Index S2 |
| Muscle mass | — | ✓ via Index S2 |
| Hydration | — | ✓ via Index S2 |
| Bone mass | — | ✓ via Index S2 |
| Visceral fat | — | — |
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 WHOOP models WHOOP 5.0 (2025), WHOOP MG (2025), all 2 WHOOP devices
Current Garmin models CIRQA Smart Band (2026), Forerunner 170 (2026), Forerunner 70 (2026), Forerunner 570 (47mm) (2025), all 28 Garmin devices
WHICH ONE FOR YOU
Pick the one that matches your priority
GARMIN
Pick Garmin if
- You want a screen, GPS, ECG, Body Battery
- One-time payment
- You're comfortable uploading GDPR ZIP weekly
WHOOP+GARMIN
Pick both if
- WHOOP for recovery + strain modeling
- Garmin for GPS workouts + Body Battery + ECG
- Both feeds merge in MyBodyAI when approvals land
FAQ
Frequently asked questions
Should I choose WHOOP or Garmin?
For most people it is one or the other. Both are daily-wear devices that track the same core things, heart rate, sleep and activity, so wearing both is redundant. Use the matrix above to pick the one that wins the categories you care about.
Which one tracks more health signals?
WHOOP tracks 19 of the 33 signals I compare, Garmin tracks 27. The matrix above breaks it down by category, and they often win different categories.
Is it worth switching from WHOOP to Garmin?
Only if Garmin wins the categories you actually care about. If you already own WHOOP and it covers your main goal, the upgrade is rarely worth it. The matrix above shows exactly what changes.
How did you compare WHOOP 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 I build with these signals — 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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