Period Tracker Apps You Can Share with Your Partner (2026)
If you want your partner to know when your period is coming without explaining it every month, you need a period tracker with partner sharing. Several apps do this, but they differ in what your partner actually sees, whether sharing is free, and whether it works when one of you has an iPhone and the other has an Android phone.
This guide compares six period tracker apps you can share with a partner, explains what to check before you connect, and shows how to set it up. What we say about other apps comes from their official websites, help centers, and store listings, checked on November 3, 2026.
Disclosure: we make COUPPLY. We list it first, and we describe every other app only from what its developer states. This article isn't medical advice: cycle predictions are estimates, so don't use them as birth control.
Key takeaways
- The best period tracker to share with your partner is one that lets you choose exactly what they see, such as your predicted period and PMS days but not your fertile window.
- Sharing is free in COUPPLY and in Flo's basic Flo for Partners. Clue Connect needs Clue Plus, and Cycles lists partner features under Cycles Premium.
- COUPPLY, Flo, Clue, Stardust, and PairCare are on both iPhone and Android. Check this first if you and your partner use different phones.
- Most period trackers share one way: you share, your partner follows. COUPPLY puts your cycle on the shared couple calendar you already use together.
- Predictions are estimates. They can't tell you when it's safe to have sex without contraception.
Why share your period with your partner?
Couples who share a cycle tracker usually aren't after medical data. They want fewer small misunderstandings. If your partner can see that PMS days or your period are coming up, they can plan a quieter weekend, pick up what you need on the way home, or simply not take a short reply personally.
It also helps with planning. Trips, big dinners, and long hikes are easier when you can both see roughly when your period is likely to start.
What you share is up to you. Some people share everything, some only their predicted period, and some only a general phase like "PMS." A good app makes each of these easy to choose and easy to change later.
What to check before you share
- What exactly your partner sees. Your period dates only, or also ovulation, fertile days, PMS, symptoms, and moods? Look for per-item controls.
- Whether sharing is free. In some apps the tracker is free but partner sharing is a paid feature.
- What your partner has to install. Usually your partner needs the same app. Check that it runs on their phone.
- iPhone and Android. Several period trackers are iPhone-only, which doesn't work if your partner uses Android.
- One-way or both ways. Most apps let one person share and the other follow. If you both menstruate, check that both of you can share.
- Notifications. Does your partner get a reminder before your period, a message when it starts, or nothing unless you choose to tell them?
- Privacy. Cycle data is sensitive health data. Read the privacy policy and look for encryption, especially end-to-end encryption.
- How to stop. You should be able to stop sharing at any time, without asking your partner.
Period tracker apps you can share with your partner
1. COUPPLY
COUPPLY is an all-in-one app for couples on iPhone and Android, with a shared calendar, chat organized into threads, lists, photos, and a period tracker you can share with your partner. Instead of a separate app just for your cycle, it puts your cycle on the couple calendar you already use together.
From your period records and cycle, it predicts your next period, your ovulation day, your most fertile days, and your PMS days. For each of these, you choose separately what shows on your own screen and what your partner can see, so you can share your predicted period and PMS days but keep your fertile window to yourself. Shared items appear on your partner's calendar and in the user widget on their Home screen, and if they open the Period tracker, they see what your current phase is usually like and a short tip on how to look out for you.
Your partner isn't notified every time you log something. When you record the day your period started or ended, COUPPLY asks whether to tell your partner, and nothing is sent unless you choose "Notify." Either of you can also turn on a reminder the day before a predicted period or PMS days. If you're on the pill, the pill tracker logs each pill and shows your break days on the calendar, with sharing off until you turn it on.
Things to know: COUPPLY is a couples app with period tracking, not a dedicated women's health app, so it doesn't offer symptom insights or health articles like Flo or Clue. Everything you save is end-to-end encrypted, so the COUPPLY team can't read your records.
| Platforms | iPhone, Android |
|---|---|
| Price | Free; optional COUPPLY PRO subscription (one partner subscribes, both get it) |
| Your partner sees | Only the items you turn on: predicted period, ovulation day, fertile days, PMS |
| Best for | Couples who want the cycle on the same calendar as the rest of their plans |
2. Flo
Flo is one of the best-known period trackers. Its partner feature, Flo for Partners, lets you invite your partner so they can learn about your cycle, see ovulation predictions, and follow a pregnancy, according to its App Store listing. You set it up from the Partner tab, and you need to be at least 18.
Flo's help center says basic access to Flo for Partners, including cycle and pregnancy tracking, is available to all users, and Flo Premium adds more content for partners, such as expert-led articles, videos, and quizzes. Flo is on iPhone and Android, and the app is available in Spanish and many other languages.
| Platforms | iPhone, Android |
|---|---|
| Price | Free; Flo Premium optional (basic partner sharing is free) |
| Best for | People who want a full health tracker and a partner who wants to learn about the cycle |
3. Clue
Clue is a science-focused period tracker from Berlin. With Clue Connect, you send an invite code from the app, and the other person enters it to follow your current and predicted cycle, including your period, PMS, and fertile window. According to Clue's support center, the person you connect with can't see other things you track, such as mood, energy, or pain.
Clue's support center also says Clue Connect is currently a Clue Plus feature, you can share with only one person at a time, and sharing works in one direction only. It isn't available in Clue's pregnancy mode.
| Platforms | iPhone, Android |
|---|---|
| Price | Free; sharing with Clue Connect needs Clue Plus |
| Best for | People who already use Clue and want to share dates, not symptoms |
4. Stardust
Stardust is a period tracker app. Its App Store listing says you can invite partners or close friends to stay in sync with your period, your journey to get pregnant, or a pregnancy. It's free to download with in-app purchases, and it's available on iPhone and Android in English, Portuguese, and Spanish.
| Platforms | iPhone, Android |
|---|---|
| Price | Free, with in-app purchases |
| Best for | People who want to share with a partner and close friends too |
5. Cycles
Cycles, by the Swedish developer Perigee, says it was the first app to introduce partner connect. Its App Store listing says you can connect with your partner to plan intimate moments, vacations, and more around your cycle, and it lists that under Cycles Premium. We found it on the App Store but couldn't confirm an Android version on Google Play.
| Platforms | iPhone (Android not confirmed) |
|---|---|
| Price | Free to log; partner features listed under Cycles Premium |
| Best for | Couples who both use iPhones and want to plan around the cycle |
6. PairCare
PairCare Shared Period Tracker is built around sharing from the start. Its App Store listing says you can share your cycle, schedule, and health status with a partner or someone you trust and choose what to share, and that PairCare Premium adds more flexible sharing controls and notifications for your partner after you log. It's on iPhone and Android, in English and Japanese.
| Platforms | iPhone, Android |
|---|---|
| Price | Free; PairCare Premium optional |
| Best for | Couples who want an app made only for sharing the cycle |
Comparison table
Based on each developer's official website, help center, and store listing (November 3, 2026). Features and prices change, so check the listing before you choose.
| App | iPhone & Android | Partner sharing | Choose what's shared | What else it does |
|---|---|---|---|---|
| COUPPLY | Yes | Free | Yes, item by item | Shared calendar, chat, lists, photos for couples |
| Flo | Yes | Free (basic); more with Premium | Yes, per its App Store listing | Full health tracker and articles |
| Clue | Yes | Clue Plus | Dates only (no mood or symptoms) | Full health tracker |
| Stardust | Yes | Free to download, in-app purchases | Not detailed in the listing | Partners and friends |
| Cycles | iPhone (Android not confirmed) | Listed under Premium | Not detailed in the listing | Planning around the cycle |
| PairCare | Yes | Free; more controls with Premium | Yes | Made for sharing |
How to share your period with your partner in COUPPLY
- Download COUPPLY on both phones and connect as a couple.
- Open the Period tracker (search for it, or use the "Health" tab) and finish the setup. Predictions start as soon as you have one record.
- In "Sharing," turn on only what you want your partner to see: predicted period, ovulation day, fertility, or PMS. You can change this any time from "..." in the top right of the Period tracker.
- Optional: if you'd rather not show a blood drop on the calendar, pick another icon, such as a moon. Your partner sees the icon you choose.
- Optional: both of you can turn on "Period tracker reminders (day before)" in notification settings to get a reminder at 8 AM the day before.
Your partner doesn't need to track anything. When they open the Period tracker, they see your shared items and what your current phase is usually like. If they menstruate too, they can start tracking their own periods from the same screen.
How to bring it up with your partner
Sharing a cycle tracker works best when it's a conversation, not just an invite code. A few things that help:
- Say why you want to share. "I'd like you to know when PMS is coming so we're not surprised" goes further than "install this."
- Agree on what they'll do with it. Maybe it's planning, maybe it's checking in, maybe it's just knowing. A prediction on a calendar isn't a reason to question someone's mood.
- Share less at first. Start with your predicted period, and add more later if it feels useful.
- Revisit it. You can change what's shared any time. That's a normal adjustment, not a sign that something is wrong.
A note on predictions and birth control
Every app in this list estimates future dates from your past cycles. Cycles vary with stress, illness, travel, and many other things, so treat the dates as a guide for planning, not a promise. Ovulation and fertile-day predictions in these apps are not a form of contraception. If your cycle is very irregular or something feels off, talk to a doctor or other health professional.
FAQ
Is there a free period tracker I can share with my partner?
Yes. Sharing is free in COUPPLY, and Flo says basic access to Flo for Partners is available to all users. Clue Connect needs a Clue Plus subscription, and Cycles lists its partner features under Cycles Premium.
Which period tracker apps let you share with a partner on iPhone and Android?
COUPPLY, Flo, Clue, Stardust, and PairCare are all on both iPhone and Android, so they work if one of you has an iPhone and the other has an Android phone. We found Cycles on the App Store but couldn't confirm an Android version.
What does my partner see when I share my period?
It depends on the app and your settings. In COUPPLY, your partner sees only the items you turn on, such as your predicted period, ovulation day, fertile days, or PMS days, on their calendar and Home screen. Clue Connect shares your cycle dates, including your period, PMS, and fertile window, but not mood, energy, or pain.
Can my boyfriend or girlfriend get a notification when my period starts?
In COUPPLY, when you record that your period started, you're asked whether to notify your partner, and nothing is sent unless you choose to. Your partner can also turn on a reminder the day before your predicted period for the items you share.
Can I stop sharing my period with my partner?
Yes. In COUPPLY, you can turn off sharing for any item at any time from the Period tracker menu, and your partner isn't asked. Other apps also let you remove a connection, for example from the Clue Connect menu in Clue.
Can I use period tracker predictions as birth control?
No. Predicted periods and fertile days are estimates based on your past cycles, and cycles change. Don't rely on them to avoid pregnancy. Talk to a doctor or other health professional about contraception.
Which period tracker should you share?
If you want a full health tracker and your partner wants to learn about the cycle, Flo and Clue are the best-known options. Flo's basic partner sharing is free, and Clue Connect is part of Clue Plus. If you want an app made only for sharing, PairCare is built for that.
If you'd rather not add another app, and you want your cycle on the same calendar as your plans, chat, and photos, with control over every item your partner sees and everything end-to-end encrypted, try COUPPLY for free.
