HeadsUpDaddyIs it weird to track your partner's cycle?
It is weird if she doesn't know. If she does, it is roughly the same as remembering her dentist appointment — which is to say, the bar is consent, not secrecy.
The line is consent, and it is not subtle
Tracking someone's body without telling them is surveillance, whatever the motive. There is no version of this where a hidden log is fine because your intentions were good — the hiding is the problem, and it is the part she would object to if she found out.
Tracking with her knowledge is something else entirely: it is remembering. Couples remember each other's schedules, allergies, and bad weeks all the time, and nobody calls it monitoring.
The test is simple and unforgiving. If you would be uncomfortable handing her the phone, you are on the wrong side of it.
What that means in practice
Tell her before you start, not after she finds out. "I keep forgetting and then being useless about it, so I'm going to write the dates down" is a normal sentence that most people receive well.
Never quote it back at her. The information exists to change your behaviour, not to win arguments or diagnose her mood in real time.
Be able to show her the whole thing on demand — everything stored, everything predicted — and be able to delete it in front of her if she asks.
How this app is built around that
HeadsUpDaddy will not create a profile until you confirm that she knows or that you are about to tell her. It is a gate, not a checkbox buried in settings.
There is a screen called Show Her, designed to be handed over: it lists every date stored, every prediction made, and every notification that will fire, in plain language with no jokes in it, and it carries a delete button that genuinely deletes — the profile, its history, and its pending notifications.
Nothing is uploaded, because there is nowhere to upload it to. No account, no server, no sync. Her data is on your phone and nowhere else, which also means you cannot quietly keep a copy after she asks you to delete it.
IN THE APP
The consent features are the product, not a setting
The app will not create a profile until you confirm she knows or that you are about to tell her — a gate, not a checkbox. There is a screen called Show Her, built to be handed over: it lists every date stored, every prediction made and every notification that will fire, in the plainest tier with no jokes in it, and it carries a delete that genuinely deletes the profile, its history and its pending notifications. Nothing is uploaded, because there is no server to upload it to.
What Show Her opens with
About this screen
This is everything HeadsUpDaddy stores about Sarah. You can read all of it here, and you can delete all of it, any time, yourself.
What it lists
What is stored · what is predicted · what it does
Name, relationship, every logged date, the next expected start, how much that can be trusted, and every notification that is switched on with the rough time it fires.
Real lines from the app, not written for this page.
Related questions
Then don't. That is the whole answer. A record of someone's body kept over their objection is not preparation, and no feature set makes it acceptable.
Yes — that is what the Show Her screen is for. It is read-only, written in the plainest tier with no jokes, and it includes a working delete.
The data is similar; the relationship to it is not. She tracks to understand her own body. You track to be less of a problem during a week you would otherwise walk into blind. If your reason drifts from the second to something else, stop.
Yes, and it is deliberately different: daughter profiles are locked to the plainest tier, there are no jokes, and the fertility features are structurally absent rather than merely switched off.
This is general information, not medical advice. HeadsUpDaddy is not a contraceptive and not a fertility treatment. If symptoms are severe, persistent, or affecting daily life, that is worth a doctor rather than endurance.
Or just get a few days' notice
HeadsUpDaddy warns you before the hard week, not during it. Free for one person, no account, no subscription.