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 14/27 signals — recovery, strain, sleep, HRV, SpO2. Garmin is a watch you buy once, reading 20/27 including Body Battery and 24/7 stress.
WHOOP
14/27API signals exposed
Screenless strap
vs
GARMIN
20/27API signals exposed
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 API signals.
SIGNAL BY SIGNAL
The full matrix
| Signal | WHOOP | Garmin |
|---|---|---|
| Heart & Vitals | ||
| Resting HR | ✓ | ✓ |
| HRV | ✓ | ✓ |
| SpO2 | ✓ | ✓ |
| Respiratory Rate | ✓ | ✓ |
| Skin Temperature | ✓ | ✓ |
| Body Temperature | — | — |
| Blood Pressure | — | — |
| ECG · AFib | — | ✓ |
| Sleep | ||
| Sleep duration | ✓ | ✓ |
| Sleep stages | ✓ | ✓ |
| Sleep score | ✓ | ✓ |
| 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 | ✓ | — |
| Body fat % | — | — |
| Muscle mass | — | — |
| Hydration | — | — |
Verified against vendor developer documentation.
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 14 of the 27 signals I compare, Garmin tracks 20. 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 reviews like DC Rainmaker and The Quantified Scientist and peer-reviewed accuracy studies. Signal-level edge cases are noted in the matrix, not hidden behind a single check mark.
WHERE TO BUY
Check prices at the source
Direct links to each vendor's store. No affiliate links.
- WHOOP Official store Check at WHOOP →
- GARMIN Official store Check at Garmin →
MORE COMPARISONS
Explore other pairs
OPTIONAL — IF YOU WANT MORE
Want one place that merges both feeds?
MyBodyAI merges these signals into Biological Age, Recovery and 9 other indices.
Start your 7-day trial →