COROS
Pick COROS if
- Multi-week battery and light hardware matter
- Price-to-spec ratio is your filter
- Trail or ultra running and you already use COROS
COROS vs Garmin
Both target athletes. COROS reads 15/33 signals and wins on weight, battery life, and price. Garmin reads 27/33 and wins on Body Battery, 24/7 stress, ECG, and a much larger app ecosystem.
COROS
15/33signals its devices cover
Multisport watch
vs
GARMIN
27/33signals its devices cover
Athletic / outdoor watch
QUICK VERDICT
If hardware weight and battery life dominate your decision, COROS is half the weight and lasts weeks. If you want every signal MyBodyAI can read from one device (Body Battery and 24/7 stress in particular) Garmin remains the standard. Garmin reads a handful more signals overall, but the price and weight gaps are the bigger differentiators.
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 | COROS | 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 | — | — |
? = the catalog has not settled this signal for the brand, so it is not counted.
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 COROS models COROS PACE 4 Pro (2026), COROS APEX 4 (2025), COROS NOMAD (2025), COROS PACE 4 (2025), all 9 COROS 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
- Body Battery + 24/7 stress + ECG matter
- Larger ecosystem (Connect IQ, structured plans)
- You're fine uploading a GDPR ZIP weekly until OAuth opens
COROS+GARMIN
Pick both if
- COROS for ultras and trail expeditions
- Garmin for daily wear and indoor training
- Combined feed reaches 27/33 unique signals in MyBodyAI
FAQ
Frequently asked questions
Should I choose COROS 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?
COROS tracks 15 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 COROS to Garmin?
Only if Garmin wins the categories you actually care about. If you already own COROS and it covers your main goal, the upgrade is rarely worth it. The matrix above shows exactly what changes.
How did you compare COROS 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 your wearable data in one place?
MyBodyAI is what these signals feed: it combines every brand it connects to 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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