Most men guess. You know.
HeTracks is free and there is nothing to pay. Leave your email so we can tell you when the phone apps land, and so you can get back in if you lose this device.
This is the only thing HeTracks ever sends anywhere. Her dates, her profile, your notes and everything else stay on this device and always will. No account, no password, no cloud copy of her cycle.
Your address is used to tell you when the phone apps arrive and to add you to our mailing list for occasional updates. We never sell or share it, and replying "remove" to any message deletes it.
By continuing you agree to our terms and privacy notice. In short: this is guidance, not medicine, it is never for fertility or contraception decisions, and you only use it for someone who knows.
Two answers and you are in. Everything else can wait, and the app gets sharper as you add it.
Tap the closest one, or pick an exact date. Roughly is fine: it self-corrects every month you tap the marker.
Cycle length is day one of one period to day one of the next. Period length is how many days the bleeding lasts. Guess if you do not know: HeTracks corrects both from the dates you mark.
The way she most easily feels loved. Not what you give, what actually lands for her.
Nobody has just one, and it moves about depending on the week. Pick the one that lands hardest, add a second if you know it, and change it whenever you learn better.
Most people have two, and they move about depending on the week. HeTracks leads with the first and works the second in.
This is about which way she moves under pressure, towards you or into her own space. It changes the tone of the guidance, never the respect.
Her star sign, worked out from her birthday. A shared language for reflection, not a mechanism. Leave it on if she enjoys it, off if she does not.
A single number from her full birth date, said to describe the shape of a life. Computed automatically, so it costs you nothing to try.
From the Gene Keys, a modern system built on the I Ching. There are six lines, each a different way of moving through the world. Only set this if she knows hers or one obviously fits.
A personality system built around what a person is most afraid of and what they do about it. Nine types. Only set this if she knows hers: guessing it produces worse guidance than leaving it off.
A modern system about how a person is built to make decisions and spend energy. Five types. Again, only if she knows hers.
Astrology, numerology, Gene Keys, Enneagram and Human Design are part of the full version. Everything above stays free.
Flag what she's carrying and HeTracks shifts toward the right kind of support, whatever the phase, until you switch it off.
Every woman is different: this is a general map, not a rulebook, and she is always the real source. If her premenstrual symptoms are severe enough to disrupt her life, that can be PMDD, and it deserves proper professional support. Not a medical tool, never for fertility or contraception decisions.
Stuck for a move? Tap below for an instant idea, tuned to her phase: a gesture, a date, a gift, or a question.
The idea generator, your own readings and the Us section are part of the full version. Your daily card and her map stay free here for as long as you want them.
Your own readings, and the Us section combining you both.
Powers your own star sign and life path readings, and the Us section that compares the two of you.
The way you most easily feel loved. Worth knowing, because most people give what they would want to receive, and that is where couples miss each other.
Six ways of moving through the world, from the Gene Keys. Set it if you know yours, or read the six above under her setup.
Nine personality types built around core fears. Only set it if you actually know yours.
How you are built to make decisions and spend energy. Five types.
Readings here are reflective lenses, not science. The evidence-based part is simpler: the man who examines himself daily is the one she feels safe with.
Mum, sister, daughter, close friends. Birthdays, what they love, how they feel loved. Cycle tracking exists only for a consenting partner, never for anyone else. That line is the product.
How this person most easily feels cared for. Same five as before.
All data lives on this device only. No account, no cloud, nothing leaves your phone. She should know you use HeTracks: that's the kind of man this is for.
Every date you have marked as day one. Tapped a day late or by accident? Remove it and the learned cycle length recalculates.
Everything lives on this device only, nothing in any cloud. Copy a backup before switching phones or clearing your browser.
Tip: add HeTracks to your home screen and it behaves like an app, with far more durable memory. On iPhone: Safari, Share, Add to Home Screen. On Android: Chrome menu, Add to Home screen.
This wipes her profile, your cycle history, your streak and every other profile from this device. It cannot be undone, so copy a backup code first if there is any doubt.
Everything here, the full 1,400-item library, every lens, every theme, free while HeTracks is in early access. There will always be a free version of the web app. Over time the complete library and the daily nudges move to the phone apps, and if this is making you a better partner, a donation keeps the free version good for the next man.
Coming next, on iPhone and Android: daily nudges on your lock screen, so you never have to remember to open anything. Leave your email and we will tell you when it is ready.
HeTracks grows one couple at a time. Send it to a man who'd use it, or to a woman whose partner should have it. When she posts about it, the tag is #HeTracks.
The short course in her cycle and how to be great through it. Ten minutes here makes everything else in HeTracks make sense.
Her cycle is run by hormones, mainly oestrogen and progesterone, rising and falling on a loop of roughly 21 to 40 days. Those shifts genuinely influence energy, mood, sleep, appetite and desire.
Two things matter more than any chart. First, every woman is different: only around 1 in 8 runs the textbook 28-day cycle. Second, these are tendencies, not certainties. HeTracks gives you the map. She is always the territory.
Roughly days 1 to 5. Hormones are at their monthly low, and energy usually is too. Cramps and fatigue are common: rest is physiology, not mood.
Your job: warmth, food, low light, logistics handled. Ginger tea has real evidence for cramps, and iron-rich food (red meat, lentils, spinach) replaces what's lost. Wanting quiet is not distance from you.
Roughly the week after her period. Oestrogen climbs, and with it energy, optimism and openness to new things.
Your job: match the energy. Plans, novelty, big conversations, momentum. This is the easiest week of the month to build things together.
A few days around mid-cycle, though the exact day varies far more than the day-14 myth suggests. Oestrogen peaks; confidence, sociability and often desire peak with it.
Your job: show up fully. Real dates, undivided attention, specific compliments. These are the connection days of the month, so don't spend them on your phone.
The stretch between ovulation and her next period, often the longest phase. Progesterone rises then falls, and in the final week around 3 in 4 women feel some PMS: sensitivity, irritability, fatigue, cravings.
Your job: steadiness. Two thoughtful gestures a day, absorb one moment of friction without reacting, no criticism, no big surprises. It's chemistry, not a verdict on you.
Worth knowing: if her premenstrual symptoms are severe enough to disrupt her life or bring dark thoughts, that can be PMDD, a real medical condition affecting a small minority of women. That's beyond an app: it deserves proper professional support, and your backing in seeking it.
The pill, hormonal IUD and implant work by holding hormones steady, so there is no natural cycle to track. Any bleed on the pill is a withdrawal bleed, not a true period.
That's why HeTracks switches to steady mode rather than pretending: honest beats mystical. What she needs then is what every relationship runs on, daily attention and responsiveness.
The best-evidenced idea in relationship science is perceived partner responsiveness: feeling understood, validated and cared for. It's the bedrock of intimacy.
Close behind it: turning toward. Couples who consistently respond to each other's small bids for attention, the comment, the sigh, the "look at this", are dramatically more likely to last. Small is the whole game, which is why HeTracks deals in small daily moves, not grand gestures.
Love languages are a hugely popular way to talk about affection. The honest science: people don't really have one fixed language, and the best approach is a balanced diet, all five on the menu, served to the moment. That's exactly how HeTracks uses them.
Her stress style is based on attachment research, the well-evidenced finding that people differ in whether stress makes them seek closeness or space. HeTracks uses it to tune tone, never to label her.
Astrology and Human Design are belief systems, not science, and HeTracks labels them that way. If she's into them, they're a shared language and a lens for reflection. If she's not, leave them off. Either way, the evidence-based core does the heavy lifting.
Oestrogen is the builder: it rises through the follicular phase lifting mood, energy and focus, peaks at ovulation, then falls twice, once mid-cycle and once before her period. Most of the good-feeling weeks ride on it.
Progesterone is the calmer: it rises after ovulation with a mildly sedative effect, then drops sharply pre-period. That drop, alongside falling oestrogen, is the engine of PMS.
Testosterone gives a small mid-cycle bump linked with confidence and desire. LH and FSH are the messengers that trigger ovulation itself. You do not need the chemistry degree: you need to know the tide exists and roughly when it turns.
Only around 1 in 8 women runs a textbook 28-day cycle with ovulation on day 14. Anything from 21 to 40 days can be normal, cycle length can shift month to month, and stress, travel, illness and age all move it.
This is why HeTracks learns from her real dates rather than assuming the textbook, and why the one-tap "her period started today" matters: reality beats prediction. If her cycles suddenly become very irregular, very heavy, or vanish, that is a doctor conversation, encouraged kindly, never diagnosed by an app or a boyfriend.
Cycle-syncing workouts and diets: the claim that training must be matched to phase for hormonal advantage has been tested and largely debunked. She should train when it suits her, full stop.
Period synchrony: the idea that women living together sync up was disproven by large data studies. A charming myth, still a myth.
"She's just hormonal": the most damaging one. Hormones influence intensity, not validity: the feeling underneath is real and deserves a real response. Using biology to dismiss her is the fastest way to teach her not to share it.
Desire typically peaks around ovulation and often dips late luteal and during menstruation, but the range between women, and between cycles, is enormous. The rule that outranks every pattern: her signals today beat any calendar.
Practical honesty: some women want closeness on their period, some want none, and both are normal. Affection without agenda, the hug that asks for nothing, is welcome in every phase and builds the trust that everything else rests on. Pressure, scorekeeping and sulking are the three intimacy killers; patience is the multiplier.
Normal tone, normal words. "Period" is not a scary word, and euphemisms delivered with a wince teach her the topic embarrasses you. Ask practical, warm questions: what helps, what to stock, what to skip. Then remember the answers, because asking twice is fine and forgetting forever is not.
Never use her cycle in an argument, never announce her phase to others, and never say "is it that time of the month" as a rebuttal. The app is yours to be a better man with, not evidence to be produced. If she asks what HeTracks tells you, show her everything: it should only ever read like care.
Usually starting in the 40s (sometimes late 30s) and lasting several years, perimenopause is the run-up to menopause: cycles become irregular, and many women experience hot flushes, disrupted sleep, mood changes and brain fog while hormones swing rather than glide.
Partner playbook: believe the symptoms, cool the bedroom, guard her sleep, expect the map to stop being predictable, and back her in seeking good medical support because effective help exists and too few women are offered it. The app's phase guidance assumes regular cycles, so in this stage treat the daily cards as care prompts and lean on her reports, not the ring.
Pregnant: the cycle stops and so should the tracking: switch the app's mindset to pure daily care. Trimesters bring their own tides, exhaustion early, energy mid, discomfort late, and the winning constant is practical support plus zero commentary on her body.
Postpartum: the first months are recovery, not a return to normal. Watch with love for postpartum depression, low mood, withdrawal or hopelessness lasting beyond a couple of weeks, and be the one who helps her reach professional support early.
Trying to conceive: a firm line, stated with respect: HeTracks is a care app and must never be used for fertility timing or contraception. Its phase maths is nowhere near medical grade, and pretending otherwise would be dangerous. Dedicated medical tools and professionals exist for that job.
Around 3 in 4 women get some PMS. A small minority, roughly 1 to 3 percent, experience PMDD: a severe, diagnosable condition where the pre-period week brings depression-level mood symptoms, rage, anxiety or despair that genuinely disrupt life, then lift when her period arrives.
Why it matters to you: PMDD is strongly linked with suicidal thoughts, it is treatable, and partners are usually the first to see the pattern. If one week in four is wrecking her life on repeat, track the pattern together, say what you see with love, and back her fully in getting professional help. That is not overstepping; that is the job.
Everything you enter is stored on this device only: no account, no cloud, no server. Nothing leaves your phone, which also means clearing your browser data erases it, and a second device starts fresh.
And a principle, not just a setting: she should know you use HeTracks. Built for men who pay attention in the open.