Garmin's Body Battery is a useful starting point — but it compares you to norms, not your own baseline, and explains nothing. Kreev is built for Apple Watch users who want to go deeper.
Hardware + subscription, year one. No hidden fees.
Kreev: free forever, Sentinel $39.99/yr — uses your existing Apple Watch. Garmin: watch hardware $200–$800+; Garmin Connect free, Connect+ $9.99/mo.
| Feature | Kreev | Garmin |
|---|---|---|
| Hardware Cost | $0 (uses Apple Watch) | $200–$800+ (Garmin watch) |
| Monthly Cost | $5.99/mo | Free / $9.99/mo (Connect+) |
| Works with Apple Watch | ✓ Yes | ✕ Garmin only |
| Recovery Score | ✓ (0–100) | Body Battery (0–100) |
| Personal Baseline (Z-Score) | ✓ | ✕ Population norms |
| Algorithm Transparency | Published | Black box |
| AI-Powered Insights | Daily narrative | None |
| HRV Tracking | ✓ | ✓ |
| VO2 Max Tracking | ✓ | ✓ |
| Free Tier | ✓ forever | Connect basic (limited) |
| Trial | 30 days Sentinel, no card | ✕ |
| Data Privacy | Named vendors, no ads | Standard policy |
Garmin's ecosystem is Garmin-only. If you wear an Apple Watch, you don't need to buy new hardware — Kreev is built specifically for HealthKit and delivers deeper recovery intelligence than Garmin's Body Battery.
Garmin's Body Battery is a useful aggregate metric, but it uses population benchmarks and doesn't explain itself. Kreev computes your score against your own Z-score baseline and generates a full AI narrative every morning explaining why.
Garmin does not publish how Body Battery is calculated. Kreev publishes its scoring methodology in full and explains every score in plain language. You always know what the number means and why it changed.
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