OURA
Pick Oura if
- Sleep depth is your priority
- You won't wear a watch to bed
- Overnight HRV without a watch on your wrist
Oura vs Garmin
Oura is a ring with 18/33 signal coverage and connects over OAuth today. Garmin is a watch with 27/33 plus the most unique signals — Body Battery and 24/7 stress. They overlap on sleep, HRV, SpO2, respiratory rate.
OURA
18/33signals its devices cover
Smart ring
vs
GARMIN
27/33signals its devices cover
Athletic / outdoor watch
QUICK VERDICT
Different shapes for different jobs. Oura wins on sleep depth and gives you cardiovascular age. Garmin wins on athletic activity, Body Battery, 24/7 stress, ECG. Once both are connected to MyBodyAI, the combined feed reaches 29/33 signals — among the most complete combinations available.
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 | Oura | 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 Oura models Oura Ring 5 (2026), Oura Ring 4 Ceramic (2025), Oura Ring 4 (2024), all 3 Oura 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 Body Battery + 24/7 stress + GPS
- Multi-week battery and outdoor GPS matter
- You're comfortable uploading a GDPR ZIP weekly
OURA+GARMIN
Pick both if
- Oura at night + Garmin during the day
- Most complete combo I can wire today (29/33)
- Garmin GDPR upload until OAuth opens
FAQ
Frequently asked questions
Should I choose Oura 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?
Oura tracks 18 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 Oura to Garmin?
Only if Garmin wins the categories you actually care about. If you already own Oura and it covers your main goal, the upgrade is rarely worth it. The matrix above shows exactly what changes.
How did you compare Oura 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.
Start your 7-day trial →