Knowledge Base » Sleep & Insomnia

Sleep Monitoring App

"I slept 8 hours, but I'm still tired." This is a common problem. Time spent in bed does not equal sleep time, and light sleep does not regenerate as deeply as deep sleep. Sleep monitoring apps (sleep trackers) allow you to peek behind the scenes of your night and understand what's really happening when you close your eyes.

How Does It Work Without Wires?

Most apps (including those on smartwatches like Apple Watch) use an accelerometer (detects movement) and a microphone (detects snoring/breathing), as well as a heart rate monitor, to estimate sleep stages:

  • Light Sleep (NREM 1 & 2): Heart rate slows, body relaxes.
  • Deep Sleep (NREM 3 - Delta): Crucial for physical regeneration. The body is almost motionless.
  • REM (Dream Sleep): Heart rate speeds up, eyes move, body is paralyzed (atonia). Important for mental health.

Smart Alarm and Analysis in Corty

The Corty app integrates with Apple Health to retrieve your sleep data from your watch or phone. But we go a step further. Corty asks you in the morning: "How do you feel?" We combine biological data with your subjective feeling to give you personalized advice. E.g., "Your resting heart rate was high last night – maybe try a calming meditation this evening."

Understand Your Sleep with Corty

Scientific Sources:

  • Baron, K. G., et al. (2017). "Orthosomnia: Are Some Patients Taking the Quantified Self Too Far?". Journal of Clinical Sleep Medicine.

Master stress with Corty

All described techniques can be found in the Corty app. Download it now and start your journey to inner peace.

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