Period Partner
What helps, not just what's happening
Advice by phase — the app surfaces what's likely to help this week, not only the phase name.
A cycle tracker for the partner
She tells you the date. The app tells you what helps.
You log the day she told you her period started. The app works out the phase and turns it into something useful to do this week.
We'll email you when iOS opens.
The whole mechanic
One date in. A week of knowing what to do.
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01
You log
He taps in the date she told him her period started. That is the only input there is.
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02
The app derives
It works out the phase and the next likely date, then turns that into what actually helps this week.
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03
She has no login
There is no account for her to make and no app for her to install.
What it can and cannot see
It never reads her phone. It only knows a date.
What it uses
- A date you typed in by hand
- The dates you logged before it
- A first name, so the app can address her
What it never touches
- Her phone, in any form
- Her location, messages or calendar
- Any sensor, wearable or health app
She is not the user. She does not create an account, and she cannot see what you store. Only keep it if she is fine with that.
- Her app
- None. Nothing to install.
- Daughter mode
- Hides fertility, ovulation, and libido content entirely.
- Deleting
- One tap removes the account and everything in it.
What it does
Four things, and nothing else.
One roster, more than one person
Track a partner and a daughter from the same account, and switch between them.
Daughter mode
Mark a profile as a daughter and fertility, ovulation, and libido content is suppressed everywhere.
Delete anytime
One tap removes the account and everything in it. No waiting period, nothing to cancel.
Coming soon to iOS.
We'll let you know the moment Period Partner is on the App Store.
iOS only, at launch. We'll email you when iOS opens.
Estimates, not medicine.
Every date here is an estimate worked out from the days you logged. Ovulation is worked backwards from the next predicted period, not assumed at day fourteen; cycle length is a median, so one odd month does not throw off the rest. It is still an estimate.
Period Partner is not contraception and it is not medical advice. It does not diagnose. Severe pain, bleeding beyond eight days, or three months without a period are all worth a doctor.