Stardust for Partners: What He Actually Sees
Stardust is free to download, and its FAQ lists what the paid tier unlocks. Partner Mode is not on that list. Harder to establish is what Partner Mode shows the person on the receiving end, because Stardust has never written it down.
There is a reason that question is hard to answer. Search for Stardust partner mode and you get TikToks. Stardust's own help pages mention Partner Mode in a single sentence and then move on. So here is the written version, with the parts we could verify from Stardust marked as such, and the parts that only exist in the company's own videos marked as that instead.
What Stardust partner mode is
Partner Mode is an official, named Stardust feature. The company's FAQ describes it in one line: "We also offer a Partner Mode, so significant others can follow along, stay in sync, and support the people they love—no cycle required."
That last clause is the important one. You do not need a cycle to use the app. You install Stardust, she adds you, and you get a partner-shaped version of it rather than a tracker with a guest pass. The store listings put the same feature more broadly: "invite partners or close friends to stay in sync with your period, TTC journey, or pregnancy." So it is not exclusively a couples feature. Sisters and best friends use the same mechanism.
Two things worth knowing before you install it. Stardust is free to download on both iOS and Android, and new features land on iOS first with Android following. And Stardust is not a period tracker with a bit of astrology bolted on. The astrology is load-bearing. The paid tier, Stardust Super, is built around a daily horoscope tied to her birth chart and cycle phase, a daily tarot pull, moon-phase syncing and a system of cycle "archetypes". If that makes you wince, know that going in. The tracking underneath it is ordinary and competent; the wrapper is cosmic.
How to turn it on
She turns it on, not you. The invite runs from her side of the app, which is the correct way round, because it is her data.
Stardust has never published the steps, so treat any tap-by-tap guide you find as somebody's screen recording rather than documentation. What the company does state is that she invites partners or close friends, and that a partner needs no cycle of their own to use the app. So the reliable version of the instruction is short: ask her to send the invite, and let her walk you through what her build actually shows.
The reverse also exists and is worth asking about before you start. Stardust's own walkthroughs show her removing or blocking a partner from the app's settings: tap through to the partner list, select you, remove. Access is something she grants and can take back, and she does not need your agreement to do it.
If you are the one who wants this to happen, the ask matters more than the mechanics. "Can you add me on Stardust so I stop getting it wrong" lands very differently from "can I see your app". One is about your behaviour. The other sounds like an audit.
What he actually sees
Stardust publishes no written breakdown of the partner view. What follows comes from the company's own TikTok walkthroughs, which are the closest thing to documentation that exists, plus what the store listings state directly.
From Stardust's own videos: the partner sees where she is in her cycle and the symptoms she has logged that day. There is also a feature called "Cast a Spell", which is Stardust's name for her sending you a specific request. It turns "I need something" into a tap rather than a conversation she has to open.
From the store listings, verified: partners stay in sync with her period, her trying-to-conceive journey, or her pregnancy, depending on which mode she is in. So the partner view follows her through those life stages rather than being period-only.
What that means day to day: on Stardust's own account, you see the symptoms she has logged. Stardust does not publish how or how quickly a partner view refreshes, so treat what is on screen as her last entry rather than her current state.
What it does not do
It depends on her logging. The symptoms Stardust's walkthroughs show a partner seeing are symptoms she typed in. This is the failure mode of every shared-tracker arrangement, not a Stardust flaw specifically. Enthusiasm for daily logging fades, and a stale calendar is worse than no calendar, because you trust it.
It does not tell you what to do. On Stardust's own account you get her logged symptoms and her position in the cycle. What you do with "day 24, low mood logged" is left entirely to you. The gap between knowing where she is and knowing what helps is the whole problem most men have, and a mirror of her log does not close it.
It is not contraception, and Stardust says so plainly. The listing states the app "should not be used as a birth control/contraception", and separately describes ovulation forecasts and fertile-window awareness. Forecasting a fertile window is not the same thing as protecting against one.
It does not work if she does not want it. There is no version of Partner Mode you can enable from your side, which is correct, and also means the entire feature depends on a conversation you have not had yet.
It will not suit everyone's taste. Stardust writes its daily content in a specific voice: moon phases, archetypes, tarot. Some couples love it. Some find it makes a medical topic feel unserious. Neither reaction is wrong, but if she is going to be your source of truth about her own body, the register matters.
The privacy question, handled honestly
Stardust is founded and led by women and leans hard on privacy in its marketing, stating that it does not sell or share personal health information. Take that as the company's own claim rather than an audited fact, which is the right stance for any app in this category.
The privacy question that matters more here is not corporate. It is between the two of you.
If Stardust's own walkthroughs are accurate, Partner Mode passes her logged symptoms to you. That is a real disclosure, and it is not free for her. She is handing over the days she feels worst, in writing, to the person she is closest to. The right way to hold that is boringly simple: do not quote it back at her. "Your app says you're on day 26" is the sentence that gets the feature switched off. Use it to adjust what you do, not to win an argument about why she is upset.
Stardust's walkthroughs also show her removing or blocking a partner at any time. If she does, treat it as information rather than an insult. Some people share for a month and find it makes them self-conscious about logging honestly. That is a real cost of shared trackers and it is worth naming.
Stardust vs a dedicated partner app
Stardust's partner mode is the same shape as Flo's, Cycles' Partner Connect, Natural Cycles' Partner View and Ovia's Friends & Family Sharing: her app, extended to you. Its advantages over those are that it runs on Android as well as iPhone, and that it covers trying to conceive and pregnancy rather than periods alone. Its disadvantage is that it is documented in videos rather than help pages, so you find out what it does by using it.
A partner-side app inverts the arrangement. You enter her rough cycle dates once, on your phone, and it works from an estimate rather than from her entries. She installs nothing and logs nothing. That is less accurate on any given day, and far more durable across the months where nobody feels like tracking anything.
The choice is really about which failure you can live with. A shared tracker fails when she stops logging. A partner-side app fails by being a day or two out. An estimate that is close every month is worth more than a mirror of a log nobody is keeping.
Our wider comparison of the shared-tracker family is in Flo vs Clue vs Cycles for boyfriends.
The verdict
If she already uses Stardust and likes it, Partner Mode is a straightforward yes. It is one invite, and it is the least friction available to you. Ask for it.
If she does not use Stardust, do not make this the app you campaign for. You would be asking her to change tracking apps so that you can have a view. That is a lot to ask, and the astrology layer means it will land badly with about half of people. Pick the fight that is worth having, and this is not it.
And whichever way it goes, be clear about what the feature delivers. On the company's own account it relays her entries. Doing something useful with them is still your job.
Where Yuni fits
Disclosure: Yuni is our app.
Yuni sits on the other side of the trade-off. You enter roughly when her last period started and how long her cycle usually runs. Each day it tells you which phase she is in, what tends to be going on physically and emotionally in that phase, and what to do about it tonight: what helps, what to avoid saying, when to give her space rather than attention. There is no invite for her to accept and no logging for her to keep up with. She can pair with it if she wants a self-care side of her own, but nothing depends on that.
It is iPhone only, which is the honest limit. If you are on Android, Stardust's Partner Mode is the better answer for you today, and the app is free to download, so take it.
The two are not really rivals. If she is a committed Stardust logger, Partner Mode gives you better data than any estimate can. What it will not give you is the sentence that starts "so tonight, do this". If you want the background rather than an app, the cycle phases explained for partners covers the same ground for free, and the broader guide is at period tracking for men.
Common questions
What can my partner see on Stardust? Where you are in your cycle and the symptoms you have logged that day, according to Stardust's own walkthroughs. As her mode changes between period, trying to conceive and pregnancy, the partner view follows.
Is Stardust Partner Mode free? The app is free to download, and Stardust's FAQ lists what the paid tier unlocks: Daily Decode, Daily Horoscope, Daily Tarot, the Perks Portal, the Cyclepedia, Signal Sync and Archetype Deep Dives. Partner Mode is not on that list. Stardust does not state anywhere that Partner Mode is free, so read that as an absence rather than a promise.
How do I add a partner on Stardust? She invites you. Stardust describes the feature as inviting partners or close friends, and has never published the tap-by-tap route, so ask her to run it from her side rather than following a guide that may describe an older build.
What does Stardust tell my partner about me? Stardust's own walkthroughs show partners seeing the symptoms you have logged and where you are in your cycle. It relays your entries rather than forming its own judgement about your mood.
Can I remove a partner from Stardust? Yes. Stardust's own videos show partners being removed or blocked from the app's settings at any time, without needing their agreement.
Does the partner need their own cycle to use the app? No. Stardust's FAQ says Partner Mode works with "no cycle required".
Is Stardust on Android? Yes, on both iOS and Android. Stardust says new features typically reach iOS first, with Android support following.
Can Stardust be used as birth control? No. The app states directly that it should not be used as contraception. If that is what you need, look at Natural Cycles, which is cleared as a contraceptive device, or talk to a clinician.
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