SUUNTO
Pick Suunto if
- You're an outdoor or dive athlete
- Suunto Cloud sync already works for you
- FIT files into MyBodyAI is acceptable
Suunto vs Garmin
Both target outdoor athletes. Suunto reads 15/27 signals (waitlist), Garmin reads 20/27. Suunto wins on outdoor + dive specialization. Garmin wins on Body Battery, 24/7 stress, ECG, and a larger app ecosystem.
SUUNTO
15/27API signals exposed
Outdoor + dive watch
vs
GARMIN
20/27API signals exposed
Athletic / outdoor watch
QUICK VERDICT
Suunto and Garmin are close in spirit but Garmin reads more signals overall (see the matrix below). Suunto fills the outdoor and dive niche better; Garmin fills the all-round athletic and lifestyle niche better. For MyBodyAI, the deciding factor is usually Body Battery and 24/7 stress, both of which Garmin reads and Suunto does not.
COVERAGE BY CATEGORY
Where each brand actually wins
Per-category breakdown of API signals.
SIGNAL BY SIGNAL
The full matrix
| Signal | Suunto | 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
- Body Battery + 24/7 stress + ECG matter
- Larger ecosystem (Connect IQ, apps)
- You're fine uploading a GDPR ZIP weekly
SUUNTO+GARMIN
Pick both if
- Garmin watch for daily + indoor activity
- Suunto watch for outdoor + dive sessions
- Both feeds merge in MyBodyAI when Suunto launches
FAQ
Frequently asked questions
Should I choose Suunto 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?
Suunto tracks 15 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 Suunto to Garmin?
Only if Garmin wins the categories you actually care about. If you already own Suunto and it covers your main goal, the upgrade is rarely worth it. The matrix above shows exactly what changes.
How did you compare Suunto 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.
- SUUNTO Official store Check at Suunto →
- 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 →