Measure how heavy your periods really are
PBAC Score turns what you already notice — the pads, tampons and clots you go through — into a simple, structured record of menstrual blood loss you can bring to a doctor.
No account. No photos. No AI. Your cycle data stays on your device.
What PBAC Score does
PBAC Score is a manual scoring tool based on the Pictorial Blood Loss Assessment Chart (PBAC), a long-established method for estimating menstrual blood loss from the sanitary products you use.
You log what you actually use during your period. The app assigns established point values, adds them up per day and per cycle, and shows the result on a clear scale — so a vague “it feels like a lot” becomes a number you can track over time and discuss with a clinician.
It is deliberately simple: no photos, no computer vision, no AI, no proprietary pads, and no wearable required.
Who it is for
PBAC Score is built for people with a medical reason to keep an eye on how heavy their periods are — not for lifestyle cycle tracking.
- Suspected heavy menstrual bleeding (menorrhagia)
- Endometriosis or fibroid monitoring
- Evaluating a new IUD or a change in contraception
- Perimenopausal changes in flow
- Preparing structured information before a gynecology appointment
PBAC Score is not a period-prediction or fertility app, and it is not a lifestyle wellness product.
How you record your data
Log what you use
Each day, tap what you went through: pads and tampons (light, medium or full), and clots (small or large). Mark a day where you experienced leaking or flooding.
The app scores it
Each entry has an established point value. The app totals your points for the day, and sums the days into a score for the whole cycle. Cycles are detected automatically from the days you log bleeding.
See your history
Review your current and past cycles on a simple scale, and see how each day contributed. Numbers use plain, non-alarming language.
Share with a doctor
Generate a one-page PDF overview of your recent completed cycles on your device, and share it through your phone’s standard share sheet — only when you choose to.
What the score means
The score is a running total of points from the products you log. Higher totals reflect heavier recorded blood loss. The app groups scores into three bands for readability:
These bands are a visual aid, not a diagnosis. A score of 100 is a widely cited PBAC reference point; 150 is only a display threshold used for contrast in the app. Neither number tells you whether anything is wrong — that is a conversation to have with a clinician.
Built to be quiet and trustworthy
On-device by default
Your cycle data is stored locally on your phone. There is no account to create and no server that holds your entries.
No advertising, no tracking
No ads, no advertising identifiers, no third-party marketing SDKs. Optional anonymous usage statistics can be turned off in Settings.
A calm interface
Neutral wording, tabular numbers and a restrained palette. No red-alert framing, no “normal vs abnormal” verdicts.
A report for your doctor
A clean one-page PDF summary of recent completed cycles, generated on your device and shared only at your request.
Privacy is the point
A record of your menstrual health is sensitive. PBAC Score is designed so that this record stays with you.
- Everything you log about your cycles is stored only on your device.
- There is no account, no login, and no server that receives your cycle data.
- Your phone’s operating system may back the data up to your own iCloud or Google account — the app itself cannot read those backups.
- The only data that ever leaves the app is a short list of anonymous usage events, which you can switch off.
Not a medical device
PBAC Score does not diagnose, treat, cure or prevent any condition, and it is not a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions about a medical condition. If you think you may have a medical emergency, contact your doctor or emergency services.
A clear record, kept private
Track your periods honestly, understand the trend over several cycles, and walk into your appointment with something concrete to show.