PERIOD VOLUME & FLOW TRACKER

A PBAC score without the paper chart — and your loss in ml.

"Are your periods heavy?" is the question doctors ask when your iron runs low — and the paper Pictorial Blood Loss Assessment Chart is how they find out. PeriodVol does that counting for you: log the pads, tampons and cups you use, and it gives you a PBAC-equivalent score and an estimated volume in millilitres, shown against the 80 ml line used to define heavy menstrual bleeding (HMB). Estimates — not a diagnosis.

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A change in flow is one of the most common signs your uterus sends

From your first period to menopause you'll bleed around 450 times across nearly 40 years — yet hardly anyone measures how much. Earlier first periods and later pregnancies mean longer lifetime exposure to oestrogen — and uterine conditions keep rising. Gynaecologists classify the causes of abnormal bleeding with a standard system, PALM-COEIN, and the first signal is almost always a change in how much you bleed, or bleeding between periods.

Uterine fibroids

20–30% of women of reproductive age — up to 70–80% by their 50s. Submucosal fibroids can drive a dramatic jump in flow even when small.

Adenomyosis

The uterine wall thickens and can't contract to stop bleeding well — causing heavier flow and severe cramps.

Endometrial hyperplasia & cancer

An abnormally thick lining means heavier flow and bleeding between periods. One of the top gynaecologic cancers — and rising.

PCOS & uterine adhesions

The opposite signals too: very light flow or months without a period can point to an ovarian or uterine condition.

Endometriosis affects around 10% of women of reproductive age and is a leading cause of infertility — increasingly diagnosed in women in their early 20s. Regular check-ups matter even without symptoms.

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Don't wait if… you soak through a pad in 1–2 hours, pass large clots often, bleed for more than 8 days, or your flow has more than doubled — especially alongside fatigue, dizziness, breathlessness or pale skin (signs of anaemia). Ask for a gynaecologic ultrasound.

See it for yourself

From a quick daily tap to a number you can finally show a doctor.

PeriodVol cycle summary showing 81 ml, exceeding the 80 ml heavy-bleeding threshold, with a calendar of predicted days
Your number, at a glance81 ml — flagged over the heavy line
PeriodVol logging sheet: tap the pad, tampon or cup picture that matches your saturation
Just tap a pictureNo numbers to do — we do the ml math
PeriodVol doctor report: cycle-by-cycle blood loss in ml, FIGO ranges and a PBAC-equivalent score
A report for your doctorFIGO ranges + PBAC-equivalent score

“Before my iron infusion, the haematologist asked: ‘Are your periods heavy?’ I had no idea — and nothing to show her. So I built PeriodVol to turn my flow into a number I could bring to a doctor.”

— the founder 💛

No numbers to do. Just tap a picture.

Logging takes seconds — PeriodVol does the millilitre math for you.

1

Tap what you used

A pad (by size & how soaked), a tampon, or a menstrual cup (by capacity & fill). Add clots or flooding too.

2

See it in millilitres

Each product becomes an estimated volume. Your day and whole-cycle total add up automatically.

3

Spot a heavy cycle

A cylinder marks the 80 ml line. Cross it and PeriodVol flags it — so you can talk to a doctor with real numbers.

Everything you need, nothing you don't

Volume in millilitres

Clinicians estimate flow with paper charts (the PBAC). PeriodVol is the only consumer period app we know of that turns what you log into estimated ml — automatically.

80 ml heavy flag

The clinical line where bleeding is defined as heavy (HMB). PeriodVol marks it so you can see where your cycle sits — a line, not a verdict.

Predictions

After a few cycles, your next period, ovulation & fertile window — right on the calendar.

Doctor report

A printable cycle summary with FIGO ranges & a PBAC-equivalent score — bring it to an appointment.

PBAC score, automatic

The Pictorial Blood Loss Assessment Chart doctors use, counted for you from what you log. 100 or more suggests heavy bleeding (Higham 1990) — a reference line, not a diagnosis.

Free to use

Core tracking is free on iOS, Android & web. An optional one-time Pro unlocks the doctor report.

Walk into your next appointment with a number

Free to start. Estimates, not a diagnosis — but no more shrugging.

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