Clue is the period tracker and pregnancy app that puts the power of science and the support of fertility experts in your own hands.
Understand your body and start living in sync with your cycle, instead of in spite of it, with Clue. Discover patterns in your menstrual cycle, access expert advice for things like your birth control and fertility questions, get pregnant faster, and track your developing pregnancy, all in one easy-to-use app. Clue is more than a period diary. It’s an ovulation tracker, period, and pregnancy calendar ready to guide you through all your cycle’s stages. For life.
Founded and led by women, Clue is safe, inclusive, and one of the only period apps entirely based on science. You can trust Clue as your period calendar, ovulation tracker, and fertility friend.
🔒 More than 11 million people trust Clue with their period, pregnancy, and cycle data
🇪🇺 Your health data is kept safe within the EU and will never be disclosed or shared
5 reasons Clue is your easy-to-use menstrual cycle tracker:
✓ Personalize 100+ categories for period tracking and start seeing patterns
✓ Plan around your period, ovulation, and fertile days
✓ View your menstrual calendar including birth control and PMS experiences
✓ Learn the science behind your cycle with health articles that span sex, PCOS, fertility, and pregnancy, written by Clue’s in-house Science Team.
✓ Get pregnant faster with targeted ovulation predictions and a daily fertility tracker
PERIOD AND MENSTRUAL CYCLE TRACKER
Clue Period Tracking empowers you to become the expert on your own body, with 100+ cycle tracking categories for things like your birth control, ovulation pain, PMS, and menstrual flow.
Learn how your cycle affects things like your mood, skin, energy level, and sex life, and get a heads up from Clue when you’re tracking experiences that are outside of what’s typical for you. If you have irregular periods you can also use Clue as your irregular period tracker.
The more you track, the better Clue can pinpoint your future period dates, identify patterns in your cycle, and provide you with valuable insights on your unique menstrual cycle to discuss with your OB/GYN for more effective care.
OVULATION CALCULATOR & FERTILITY TRACKER
Trying to conceive? Clue has helped millions of people plan pregnancy. Track ovulation easily, without temperature checks, and get accurate fertility predictions. Log pregnancy and ovulation tests, and plan around your most fertile days to increase your chances of getting pregnant.
PREGNANCY TRACKER WEEK BY WEEK
Easily switch to Clue Pregnancy tracking for step-by-step support and pregnancy week-by-week guidance. Set your due date countdown with a pregnancy calculator, and learn what to expect with weekly pregnancy highlights, including tips and suggestions from Certified Nurse Midwives.
A subscription to Clue Plus grants you all-in access to Clue Period Tracking, your personal ovulation calculator, and pregnancy app features.
What’s in Clue Plus?
✓ 6 months of advanced ovulation, fertile day, and period predictions
✓ Tips, advice, and expert answers to your reproductive health questions
✓ Clue Pregnancy Mode for a week-by-week pregnancy calendar
If you have any questions, our Support Team is here to help. Feel free to reach out through the app or at support.helloclue.com.
Note: Clue should *not* be used as a contraceptive.
Looking for a period tracker and ovulation app backed by science, created by experts, and with no-nonsense, frills, and flowers? Then Clue is for you.