Patterns worth raising with a clinician

Cycles consistently shorter than 21 days or longer than 35. A gap of more than 90 days with no period. Bleeding longer than 7–8 days. Soaking through a pad or tampon roughly every hour.

A very short luteal phase, or a severe, recurring low-mood pattern in the week before your period that lifts once it starts.

None of these is a diagnosis — they're signals. This app raises a flag and gives you copy you can take to a provider. It educates and surfaces patterns; it does not diagnose or treat.