PeriodVol

PeriodVol is a period tracker that measures what most apps ignore: how much you actually bleed.

Most apps log flow as light, medium or heavy. PeriodVol turns it into a number. You tap the picture of what you used — a pad by size and soak level, a tampon, or a menstrual cup by capacity and fill — and it estimates your flow in millilitres, per day and per cycle, against the 80 ml clinical threshold for heavy menstrual bleeding. So when a doctor asks "are your periods heavy?", you have an answer instead of a guess.

It also predicts your next period, ovulation and fertile window once you have logged a few cycles, and the optional one-time Pro upgrade produces a printable cycle report (80 ml line, FIGO reference range, PBAC-equivalent score) plus CSV export.

Private by design: no account, no servers, no ads and no trackers. Everything you log stays on your device, with an optional PIN or biometric lock and a backup you export yourself. The published method is at periodvol.app/methodology.

PeriodVol is not a medical device and does not diagnose anything. Volume figures are estimates based on product-absorption research, and predicted dates may be inaccurate. Consult a healthcare professional for medical advice.