High chronotype irregularity

Your Sleep Regularity Index shows nights that swing off your chronotype rhythm. Homekit reads oxygen and breathing across three nights at home.

  • A mid or low SRI often means irregular nights relative to your chemical chronotype. Phone screening is a first pass — not a diagnosis.

  • Three nights at home. Clearer chronotype baseline.

  • A stronger rhythm baseline on your profile, clearer chemistry to share, and a signal you can take to a clinician if needed.