sleep² - Precise Sleep Analysis with Polar
sleep² combines objective sleep measurement, scientifically validated evaluation, and targeted impulses for better recovery and more restful sleep. In combination with Polar H10 or Verity Sense, a particularly precise analysis based on raw heart data is possible.
How to Start with sleep²
After registration, you will receive an email with all the information about the next steps.
You can use the sleep² app for free for two months. Cancellation is not required; access ends automatically. For the most precise sleep analysis, we recommend using it with Polar H10 or Verity Sense.
Your Path to More Precise Sleep Tracking
Your path to more precise sleep tracking
With sleep², you can track and analyze your sleep with high precision. When combined with Polar H10 or Verity Sense, sleep² uses high-quality raw heart data to deliver highly accurate sleep analysis.
- Use Polar H10 or Verity Sense for maximum accuracy
- Analyze your sleep based on HRV and heart rate
- Alternatively: import sleep data via Apple Health or Google Health
Understand and improve your sleep
sleep² analyzes your sleep using heart rate and HRV to provide a scientifically grounded sleep assessment. This helps you understand how your sleep is structured, how restorative it was, and which factors influence it.
- Define and track sleep goals
- Scientifically validated sleep analysis
- Comparison with age- and gender-based norms
- Hypnogram: precise classification of 4 sleep stages
- Heart rate variability (HRV) & heart rate
How to get started with sleep²
- Go to www.sleep2.com/polar
- Enter your activation code and register
- Download sleep² app from the App Store / Google Play
- Open and confirm activation email
- Log in to the app with your activated access
- Use for free for 2 months. Ends automatically.
FAQs
sleep² works with the Polar Verity Sense wristband and the Polar H10 chest strap. However, you can also start without a sensor: either enter your sleep manually or import data from Apple Health or Google Health.
Yes. Several scientific studies show significant improvements in sleep duration, sleep latency, and sleep efficiency. Details can be found at http://sleep2.com/unsere-forschung.
No. The app guides you step by step—from the initial pairing or diary entry to the appropriate evening routine.
Your data is stored in European data centers in encrypted form in accordance with GDPR regulations and will never be disclosed without your consent.