Clue Period & Cycle Tracker

Get to know your menstrual cycle with the award-winning Clue app. Clue makes it easy to stay in sync with your body and track your period, fertility, and cycle-related experiences accurately and effortlessly.

Whether you’re trying to get pregnant, tracking cycle-related experiences, or navigating the changes of perimenopause, Clue’s got you covered.

Backed by science and founded and led by women, Clue is trusted by millions of people worldwide. Thanks to our Berlin headquarters, your data with Clue is protected by some of the strictest data privacy laws in the world (GDPR). Your health data will never be sold or disclosed. No matter where you live.

What can Clue do for you?

PERIOD & MENSTRUAL CYCLE TRACKING

Clue Period Tracking empowers you to become the expert of your unique body.

• Know when to expect your period and plan ahead with advanced, personalized predictions
• Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, PMS, cravings, pain, sex drive, and much more
• Review an analysis of your past periods and cycles, including average cycle length, period length, period flow, and cycle variation
• Log your birth control method, including pills, IUD, ring, patch, and more
• Set up calendar reminders for your period
• Add a widget to your home screen so you can see your current cycle and know when your period is predicted to start
• Sync your period data with Apple Health
• Get answers to your health questions with science-based content that breaks down complicated topics like fertility, STIs, and the science of sex into easy-to-understand articles

FERTILITY & OVULATION CALCULATOR

Clue’s clinically-tested technology takes the mystery out of getting pregnant and can easily tell you your most fertile days.

• Get personalized ovulation and 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 TRACKING

• Follow the growth of your baby with weekly updates on size, weight, and development
• 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

PERIMENOPAUSE

Get support throughout your transition to menopause (a time known as perimenopause)

• Track hot flashes, sleep changes, your mood, and more
• Stay on top of your changing cycle
• Learn how your body is changing wi