Sleep Tracker Comparison
Every major sleep tracker compared on accuracy, cost, battery, and features. All accuracy data sourced from peer-reviewed validation studies, FDA filings, and manufacturer documentation. Where no public validation exists, this is stated explicitly.
AI-built · Errors are possible · Verify critical claims at the linked source. This comparison was assembled by AI from published research, manufacturer specifications, FDA filings, and aggregated user reports. No first-person testing was conducted. AI can make mistakes when summarizing data, so please verify any specific claim against the linked study or manufacturer source before relying on it. Different studies also use different accuracy metrics (epoch agreement %, Cohen's kappa, sensitivity/specificity) and direct cross-device comparison should be interpreted with care. Read our methodology.
| Device | PSG Agreement | Price | Monthly | 2yr Cost | Battery | Weight | Temp | SpO2 | ECG | HRV | Free Staging | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WatchPAT One disposable home sleep apnea test Validation studies → | 89% | Included | Free | $0 | 0d | 0g | — | ✓ | — | — | ✓ | Check Price |
Withings Sleep Rx under-mattress mat Validation studies → | 88% | Included | Free | $0 | 0d | 0g | — | — | — | — | ✓ | Check Price |
Oura Ring Gen 3 ring Validation studies → | 79% | $299 | $5.99 | $442.76 | 6d | 5g | ✓ | ✓ | — | ✓ | — | Check Price |
Whoop 4.0 band Validation studies → | 64% | Included | $20 | $480 | 4.5d | 15g | ✓ | ✓ | — | ✓ | — | Check Price |
Oura Ring 4 ring Validation studies → | See source | $349 | $5.99 | $492.76 | 7d | 4g | ✓ | ✓ | — | ✓ | — | Check Price |
Samsung Galaxy Ring ring Validation studies → | See source | $399 | Free | $399 | 7d | 3g | ✓ | — | — | ✓ | ✓ | Check Price |
Apple Watch Series 11 watch Validation studies → | See source | $399 | Free | $399 | 1d | 30g | ✓ | ✓ | ✓ | ✓ | ✓ | Check Price |
Apple Watch Series 10 watch Validation studies → | See source | $399 | Free | $399 | 1.5d | 36g | ✓ | ✓ | ✓ | ✓ | ✓ | Check Price |
Whoop 5.0 band Validation studies → | See source | Included | $20 | $480 | 14d | 15g | ✓ | ✓ | — | ✓ | — | Check Price |
Garmin Venu 3 watch Validation studies → | See source | $449 | Free | $449 | 14d | 47g | ✓ | ✓ | ✓ | ✓ | ✓ | Check Price |
Garmin Forerunner 265 watch Validation studies → | See source | $449 | Free | $449 | 13d | 47g | — | ✓ | — | ✓ | ✓ | Check Price |
Polar Vantage V3 watch Validation studies → | See source | $599 | Free | $599 | 10d | 57g | ✓ | ✓ | ✓ | ✓ | ✓ | Check Price |
Amazfit GTR 4 watch Validation studies → | See source | $200 | Free | $200 | 14d | 34g | — | ✓ | — | — | ✓ | Check Price |
Fitbit Charge 6 band Validation studies → | See source | $160 | $9.99 | $399.76 | 7d | 30g | — | ✓ | ✓ | ✓ | ✓ | Check Price |
Xiaomi Smart Band 9 band Validation studies → | See source | $50 | Free | $50 | 21d | 16g | — | ✓ | — | — | ✓ | Check Price |
Fitbit Inspire 3 band Validation studies → | See source | $100 | Free | $100 | 10d | 20g | ✓ | ✓ | — | ✓ | ✓ | Check Price |
Bellabeat Ivy band Validation studies → | See source | Included | Free | $0 | 8d | 10g | ✓ | — | — | ✓ | ✓ | Check Price |
Muse S Athena headband Validation studies → | See source | $475 | Free | $475 | 0d | 41g | — | ✓ | — | ✓ | ✓ | Check Price |
Dreem 3S (Beacon Biosignals) headband Validation studies → | See source | Included | Free | $0 | 0d | 0g | — | — | — | — | ✓ | Check Price |
Eight Sleep Pod 4 mattress cover Validation studies → | See source | $2649 | Free | $2649 | 0d | 0g | ✓ | — | — | ✓ | ✓ | Check Price |
Empatica EmbracePlus wrist (research-grade) Validation studies → | See source | Included | Free | $0 | 0d | 40g | ✓ | ✓ | — | ✓ | ✓ | Check Price |
Withings ScanWatch 2 watch Validation studies → | See source | $350 | Free | $350 | 35d | 53g | ✓ | ✓ | ✓ | ✓ | ✓ | Check Price |
Accuracy figures use different metrics across studies (epoch agreement %, Cohen's kappa, sensitivity/specificity) and are not directly comparable. "See source" indicates no single percentage is available; consult per-device articles for full details. Sources are cited in each device review.
Highest Validated Accuracy
Oura Ring Gen 3
79% four-stage PSG agreement (Altini & Kinnunen, 2021, Sensors). The highest peer-reviewed accuracy figure for any consumer sleep tracker.
Lowest Entry Price
Fitbit Charge 6
$160 with free sleep staging. No Charge 6 specific validation study; Fitbit Charge 5 measured kappa 0.41 (Schyvens et al., 2025).
Longest Battery
Withings ScanWatch 2
Up to 35 days. FDA 510(k) K201456 (October 2021) clears ECG for atrial fibrillation detection and SpO2 measurement. Not specifically a sleep apnea screening clearance.
Not medical advice. This comparison is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. FDA clearance for a consumer device is for screening purposes, not diagnosis. If you have health concerns about your sleep, consult a qualified healthcare provider.