Get to know your menstrual cycle with the award-winning period tracker app Clue. Clue accurately predicts your next period, PMS, ovulation, and fertile days based on the most up-to-date science, and helps you understand your body better with health advice from medical experts.

With Clue, your menstrual cycle and fertility will no longer be a mystery. Track more than 100 different experiences related to your cycle like cramps, hair, skin, feelings, sleep, and sex life, to see if there’s a pattern. Whether you’re trying to get pregnant, want to be more prepared for your period, or curious to learn more about your symptoms and cycle in general, Clue’s got you covered.

Founded and led by women, Clue is an all-in-one period tracker, ovulation tracker, period calendar, and pregnancy app trusted by millions of people worldwide. Clue does not sell your personal health data and will never disclose it.

What can Clue’s period, ovulation, and pregnancy tracking do for you?

PERIOD TRACKING & MENSTRUAL CYCLE APP

• Know when to expect your period and plan ahead with advanced, personalized period, ovulation, and PMS predictions
• View your menstruation, ovulation, and fertile window in a menstrual calendar and period diary
• Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, cravings, pain, sex drive, and much more
• Log your birth control method, including pills, IUD, ring, patch, and more
• Get answers to your menstrual health questions with science-based content written by medical experts
• Learn the science behind sex, fertility, getting pregnant, and irregular cycles with easy-to-understand articles

OVULATION TRACKER & FERTILITY CALCULATOR

Clue’s clinically-tested ovulation tracker technology takes the mystery out of getting pregnant and can easily tell you your ovulation, fertile days, and pregnancy chances.

• Get pregnant faster without temperature checks or pee tests
• Track your period start dates to see pregnancy chances throughout your menstrual cycle
• Get personalized fertility predictions for the best time to try or do home insemination
• Access tips and advice from fertility experts to help you understand the science behind getting pregnant

PREGNANCY APP & PREGNANCY TRACKER

• Follow your pregnancy and the growth of your baby with weekly updates on size, weight, and development
• Pregnancy calculator and due date calculator
• Track your body's changes during pregnancy, like increased smell and taste, pregnancy glow, sleep quality, the supplements you take, and more
• Receive weekly tips and support from OB-GYNs and Nurse Midwives

Get the most out of Clue with a Clue Plus subscription!

Try Clue Plus and experience the all-in-one reproductive health app for every phase of your menstrual cycle and pregnancy:
✓ Full access to science-based articles
✓ A period calendar with six upcoming cycle predictions
✓ Clue Pregnancy (pregnancy tracker)
✓ Clue Conceive (fertility and ovulation tracking)

Note: Clue should *not* be used as a contraceptive.

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Millions of people around the world trust Clue as their period tracker, ovulation tracker, and fertility app. Start tracking your menstrual cycle and put the power of science and the support of fertility experts in your own hands.