Free tool. No sign-up. Private by design.
PCOS (now called PMOS) Cycle Tracker
Editorially reviewed on October 29, 2026. [TODO: medical reviewer] How we review
Quick answer
With PCOS (PMOS, formerly PCOS), cycles longer than 35 days, fewer than 8 periods a year, or 90 days or more without a period are worth showing a doctor. This tracker shows those patterns from your own dates. It never predicts your next period, because predictions are often wrong when cycles are irregular.
PCOS Cycle Tracker
Log the first day of each period. Add the other details only if you want to. We never predict your next period, because predictions are often wrong with irregular cycles.
Your pattern
Your data
Saved only on this device. Nothing is sent to us.
pcosphilippines.com
My cycle history (last 12 months)
Prepared by ________________ on . Bring this to your doctor.
| Start | End | Bleeding days | Cycle length | Flow | Spotting | OPK | Mucus |
|---|
Guideline flags
- None in the logged data.
Questions for my doctor
- ☐ Are my cycles irregular by the 2023 Guideline definition?
- ☐ Do I need tests to check why my cycles are long or short?
- ☐ How do we protect my womb lining if I go months without a period?
- ☐ If I want to get pregnant, how can we check if I am ovulating?
This summary was made by the patient using a free educational tool. It is not a diagnosis.
Educational only. Not a diagnosis. Talk to a doctor about your results.
How it works
Most period apps are built for cycles that come every 28 days or so. They guess your next period and your “fertile window”. With PCOS those guesses are often wrong, and a wrong date can make you worry or plan around something that will not happen. This tracker does something simpler and more honest: it shows what has actually happened.
Cycle length is counted from the first day of one period to the first day of the next. Each cycle becomes a bar on the chart. Bars above the dashed 35-day line are drawn in a darker colour so long cycles stand out. Below the chart you will see the range sentence, for example “your cycles have been 35 to 70 days”, and the middle (median) length.
Periods in the last 12 months appears once you have a year of history. The 2023 International Evidence-based Guideline defines irregular cycles, from 3 years after your first period, as cycles shorter than 21 days, longer than 35 days, or fewer than 8 a year (Rec 1.1.1). The tracker shows a plain note when your log matches any of these.
The 90-day message. If 90 days or more have passed since your last period started, the tracker shows a clear “see a doctor” note. Long gaps without a period need checking to protect the lining of the womb. If there is any chance you are pregnant, take a pregnancy test first.
Optional details. You can add the last day of bleeding, flow, spotting between periods, an ovulation test (OPK) result and cervical mucus. These help your doctor, especially if you are trying to conceive, but none of them are needed.
Doctor PDF. Tap the print button and choose “Save as PDF”. You get a one-page table of the last 12 months, the guideline flags and questions to ask. A first OB-GYN consult costs about ₱850 per consult at Kindred, and less at government hospitals.
Privacy. Everything is saved only in this browser on this device. Use “Your data” to export a backup, move it to a new phone, or delete it all. We only count that the tracker was used, never your dates.
This guide is for information. Talk to a doctor before starting or changing any treatment.
Frequently asked questions
Why doesn't this tracker predict my next period?
Predictions assume your cycles are fairly regular. With PCOS, cycles can swing from 30 to 90 days, so a predicted date is often wrong and can cause worry. Your real pattern is more useful to your doctor.
Ilang buwan walang regla, delikado ba?
Going 90 days or more without a period is a reason to see a doctor. Long gaps can let the womb lining build up, and doctors have simple ways to protect it. If you could be pregnant, take a pregnancy test first.
Can I use this while on the pill?
Yes, but bleeding on the pill is a withdrawal bleed, not a natural period, so it does not show your own cycle pattern. Note this for your doctor.
Is my data sent anywhere?
No. It stays in your browser on this device. You can export it as a file or delete it any time from the Your data panel.
Is PMOS the same as PCOS?
Yes. PMOS (polyendocrine metabolic ovarian syndrome) is the new name for PCOS, announced in The Lancet on 12 May 2026. It is the same condition with the same diagnosis and the same treatments. Both names will be used until the 2028 International Guideline update.
Sources
- Recommendations from the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome. Teede HJ et al., Fertility and Sterility (co-publication), 2023.
- Summary of the International Evidence-based Guideline for PCOS 2023. Monash University / Monash IVF, 2023.
- Mabahala ka kung ilang buwan ka na hindi nagkakaroon ng menstruation (thread). r/PCOSPhilippines, 2026.
- Kindred services and prices. Parlon, 29 October 2026.