Clue Cycle & Period Tracker

Clue Period Tracker by BioWink

In-app purchases

About this app

Clue Period & Ovulation Tracker is a science-packed health and period tracker designed to decode your menstrual cycle in every life stage – from your first period to hormonal changes, conception, pregnancy, and even perimenopause. Clue’s period tracker helps you understand your body's unique rhythm, offering deep insights into your menstrual cycle, mental health, PMS, and fertility with advanced ovulation predictions and birth control tracking.

Your health data is protected with Clue under the world’s strictest data privacy standards (the EU GDPR), so you always stay in control. 🇪🇺🔒

Period Tracker for Menstrual Cycle Tracking

• Clue’s smart algorithm powers a reliable period tracker with accurate predictions for your period, PMS, ovulation, and more.
• Plan your life better with Clue’s period calendar, ovulation calculator, and fertility tools.
• Use Clue as your daily period tracker to monitor 200+ factors like mood, energy, sleep, and mental health—and how they relate to your menstrual cycle.
• Clue can help as a period tracker for teens or anyone with irregular cycles, helping identify patterns and manage symptoms like PMS, cramps, PCOS, or endometriosis.

Ovulation Calculator & Fertility Tracker

• Use Clue as both an ovulation calculator and a fertility tracker—no need for ovulation strips or temperature tracking.
• Clue Conceive’s clinically-tested algorithm delivers daily fertility insights, ovulation tracking, and ovulation estimates—helping you get pregnant faster.
• Pinpoint ovulation with options like basal body temperature tracking (BBT), all within your period tracker app.

Pregnancy Tracker & Weekly Support

• Track your pregnancy week-by-week using Clue’s pregnancy tracker with guidance from certified Nurse Midwives.
• Stay on top of pregnancy symptoms and milestones using Clue as both a pregnancy tracker and comprehensive period tracker before, during, and after pregnancy.

Period Tracker Reminders & Birth Control Alerts

• Set helpful reminders in your period tracker for birth control, PMS, ovulation, and your next period.
• Get alerts from your period tracker when your cycle changes or PMS symptoms shift.

Track Health Conditions and Irregular Cycles

• Clue is a reliable period tracker for people with PCOS, endometriosis, irregular periods, or perimenopause.
• Understand your menstrual health better with tools for period tracking, symptom tracking, and cycle syncing.
• Use Clue as your go-to irregular period tracker for cycles that aren’t consistent.

Additional Cycle Tracking Features in Clue:

• Explore over 300 expert-written articles on menstruation, fertility, pregnancy, and more—all accessible within your period tracker.
• Personalize with daily notes and custom tracking tags.
• Use Clue Connect to share your cycle insights with partners and stay aligned on your PMS, period, and fertile days.

Clue’s award-winning period tracker is backed by science, with partnerships involving researchers at UC Berkeley, Harvard, and MIT. Be part of a global movement advancing menstrual health knowledge for everyone with a cycle.

Note: Clue Period Tracker and Ovulation Tracker should not be used as a form of contraception.

Visit support.helloclue.com for help and resources.

Download Clue to start using your free period tracker today. Subscribe for deeper insights and unlock premium features in your ovulation tracker, pregnancy tracker, and perimenopause tools.

Ratings and reviews

DO NOT DOWNLOAD if you are not willing to pay the monthly subscription!! There are Ads everywhere and you can't see the things you track during your cycle. *Everything* that makes the app interesting is behind a paywall! In the free version you can't see your past cycles, there is no analysis, it is no different if you were to track your period in excel, only that in excel you can actually access your data. Dear clue team: just make this a paid app if your free version has such poor usability.

This used to be a very good app. I've been using Clue for over 5 years now and it has been overly frustrating to see how they have been slowly been making it an app that only wants you to buy their stuff. Basically, every move you do inside the app will result in an add appearing for you to buy their subscription. They have also taken down what used to be free features and they're now only available if you buy the plan... I'll use my phone's calendar instead, same stuff without adds

I use this in the most simple form, tracking just the bleeding. Yet it is surprisingly accurate with the predictions of when my period will come, even a couple of months ahead (and will quickly update predictions those rare times I'm early or late!) Updated 2025 - though I'm still using this app, I will admit the adverts for Clue Plus are genuinely driving me up the wall. You can't open the app, track anything, or even look at your cycle without ads for Clue Plus being thrown in your face 😮‍💨

What’s new

Thanks for using Clue as your trusted cycle tracker and go-to resource for menstrual and reproductive health! We regularly update the app with new features, performance improvements, and bug fixes to enhance your experience—just like in this release.

Feel free to leave us a rating and review in the Play Store.

With <3 from Berlin, Germany