Short, sourced explainers — the science behind what Olivia Sync shows you.
The four vital signs of your cycle
Frequency, regularity, duration, and flow — the backbone of everything here.
Why “day 14” is a myth
Ovulation isn't a fixed calendar day — it moves, and yours is yours.
The luteal phase, and why we anchor on it
The second half of your cycle is the stable part — so we predict from it.
Predicted vs. confirmed ovulation
A prediction looks ahead; confirmation looks back. We keep them separate.
Reading cervical mucus
Egg-white, stretchy mucus is your body flagging the fertile stretch.
Patterns worth raising with a clinician
Some cycle patterns deserve a professional's eyes — here's the short list.
Educational only — not medical advice.