Our BetterSleep Sleep Tracker is microphone-based.
👉 It relies on sleep sound recordings to estimate your sleep stages using a combination of audio data and established sleep science principles. Here's how it works:
Data Collection
Throughout the night, we collect sounds from your device's microphone and your usage patterns. The microphone captures raw sound amplitude.
AI then classifies the sounds it detects.
Sound Classification
We analyze detected sounds (such as snoring) and use them to map sleep stages.
👉 For example, certain snoring patterns may indicate light sleep, deep sleep, or REM sleep.
Ambient Noise Analysis
We detect variations in surrounding noise while filtering out constant sounds such as fans or air conditioners. This allows us to identify events such as, getting out of bed and moving during the night.
Sleep Science Integration
We incorporate common sleep patterns and established sleep science principles to estimate your sleep stages.
👉 While this approach is not as precise as polysomnography (the medical gold standard for sleep analysis), it is based on widely accepted sleep research and scientific models.
Sleep Graph Calculation
All of these weighted factors are combined to generate your sleep graph.
⚠️ Please note: No non-wearable device (without body sensors) can measure sleep stages with absolute accuracy. Even polysomnography, the gold standard, can result in different interpretations among sleep specialists.
Sleep Score and Sleep Quality
Your sleep score is based on several factors:
Sleep Regularity: 10%
Sleep Debt: 45% → Hours slept compared to your sleep goal or the recommended 7–8 hours
Sleep Interruptions: 30% → Noise and disturbances detected by the tracker
Deep Sleep: 4.5%
REM Sleep: 4.5%
Heavy Snoring: 4.5%
👉 Higher scores generally reflect:
Consistent bedtimes
Adequate sleep duration
A peaceful sleep environment
💡 Don't Worry About a Low Score
Rather than focusing solely on the number, pay attention to:
How refreshed you feel when you wake up
Maintaining good sleep hygiene habits
Improving your overall health and well-being
We are continuously working to improve our algorithms and the accuracy of our sleep data. Your feedback is incredibly valuable and helps us make BetterSleep even better.
Have questions or suggestions? Send us a message. We're here to help 🌿