A Private Period Tracker You Can Keep for Life
Log period dates, flow and how you felt, and keep the record in one place — from your first period through perimenopause and beyond.
HarmoFlux is a private period tracker for recording period start and end dates, flow, symptoms, mood, medications and supplements. It has a free plan, no advertising, and turns your entries into a doctor-ready PDF summary. Projected dates are calendar-based estimates from what you logged, not predictions and not contraception.
Written by The HarmoFlux editorial team at Panzica Technologies Inc.. Last reviewed . Editorial standards.
Educational information based on cited authoritative sources. Not individually reviewed by a medical professional, and not medical advice.
What you can record
- Period start and end dates, and how heavy each day was.
- Symptoms around your period — cramps, headaches, fatigue, mood changes, sleep.
- Medications and supplements, with the timing you took them and how you felt afterwards.
- Free-text notes for anything a list doesn't cover.
What your period history shows you
One month tells you very little. Several months of entries let you see your own typical period length, the interval between periods, and which symptoms show up at the same point each time.
HarmoFlux organizes and summarizes what you recorded. It does not diagnose and does not establish that anything caused a symptom.
Reminders that fit an ordinary week
Set reminders for logging, for medications and for supplements. Reminders are there so the record stays complete, not so the app can nag you into a streak.
A summary you can bring to an appointment
Appointments are short. The doctor-ready PDF summary puts your recorded periods, symptoms, medications and supplements on a couple of pages so the conversation starts with facts instead of recollection.
Private by design
- No advertising business, and personal health data is not sold.
- Subprocessors are listed by name, with retention periods stated.
- You can export your data or delete your account at any time.
Where this fits in the lifespan
Period tracking is the first step of one continuous health history: period → cycle → perimenopause → menopause → postmenopause. The same app carries the record through every stage.
Common questions
How do I start tracking my period?
Log the first day of bleeding, then log each day it continues and how heavy it is. After two or three cycles you have enough entries to see your own typical period length and interval, instead of comparing yourself to an average.
Is HarmoFlux free to use as a period tracker?
Yes. Period, cycle, symptom, medication and supplement logging is on the free plan. Core is $1.99/month and Plus is $4.99/month for extra features; there is no advertising on any plan.
Does HarmoFlux predict my next period?
It shows a calendar-based estimate from the dates you logged. That is arithmetic on your own entries, not a prediction of your body, and it is not a fertility or contraception tool.
What if my periods are irregular?
Irregular cycles are exactly where a written record helps most, because the pattern only appears across months. HarmoFlux keeps every entry so you can show a doctor what actually happened rather than recalling it.
Can I keep the same period history as I get older?
Yes. That is the point of HarmoFlux: one record from first periods through the reproductive years, perimenopause, menopause and postmenopause, so you are not restarting in a new app.