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

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 😮‍💨

Took me a minute to figure out all the features they offered. I do pay for the premium I wanted an app that could help us track for conceiving. So far it's the most accurate app I've had that tracks my cycles. I tested it out and tried between an app called the period tracker and this. got my period and ovulation almost to a tee. The only thing I dont really like is that the advertising for some of their products. Most of them are from Europe,can't find it really here in Canada.

I've been using this app for years and honestly it is becoming more and more unusable. I just want a simple app to track my period, nothing else. So I open this app once a month, which means I am bombarded with all the annoying ad banners. The only reason I haven't switched to some other app yet is because I like to have all my data for all these years and I'm too lazy to migrate it, but I'm running out of patience. I actually feel dread each time I open this app now.

What’s new

New: Connect your wearable to Clue for even deeper cycle insights.

Pair your favorite device – choose from Oura, WHOOP, Withings, FitBit, Ultrahuman, Polar and more – to see temperature, sleep and heart rate trends alongside your cycle.

Understand the connection between your hormones, biometrics and lifestyle, and take your cycle tracking to the next level in 2026.

Available with Clue Plus.