Clue Period & Cycle Tracker

Clue is the period tracker and fertility app that helps you understand your menstrual cycle, predict what’s next, and make informed choices backed by science.

Whether you're trying to conceive, managing PMS, or navigating perimenopause, Clue’s period tracking and cycle insights are designed to put you in charge. Founded by women and grounded in clinical research, Clue is the period tracker trusted by over 10 million people—offering accurate ovulation predictions, detailed cycle stats, customizable tracking, and private data you control. No fluff, no gimmicks—just real, science-backed insights.

Why millions choose Clue as their period tracker:
✓ Get reliable period predictions and reminders with Clue’s smart period calendar
✓ Track ovulation and fertile days with confidence using Clue's ovulation calculator
✓ Monitor 200+ symptoms like mood, cramps, flow, skin, energy, and more
✓ Personalize your period tracker with custom tags and tracking options
✓ Stay on top of birth control, PMS, and cycle changes with helpful pill reminders
✓ Access in-depth, expert-written articles about reproductive health, fertility, and pregnancy

PERIOD TRACKER & CYCLE INSIGHTS
Clue’s period tracker helps you discover how your menstrual cycle affects everything from energy and focus to mood and skin. Log your period, symptoms, and lifestyle factors to get smarter, more personalized predictions every month.

Have irregular periods? Clue works as an irregular period tracker too—helping you spot patterns and stay informed, even when your cycle isn’t consistent.

The more you track, the better Clue understands your cycle—and the more helpful your period tracker becomes.

OVULATION TRACKER & FERTILITY SUPPORT
Trying to get pregnant? Use Clue as your period app and fertility tracker to pinpoint ovulation and identify your most fertile days—no temperature tracking needed.

Clue Conceive, our expert-designed fertility tracker, helps you get pregnant faster with daily fertility updates and smart ovulation predictions based on clinically-tested technology. Track ovulation test results, cervical fluid, and symptoms in one place.

PREGNANCY TRACKER
Switch on Clue Pregnancy Mode to follow your journey week by week. Get pregnancy tips and milestone insights from Certified Nurse Midwives, plus tools to log pregnancy symptoms and set a due date countdown—all from your trusted period tracker app.

MENOPAUSE & PERIMENOPAUSE SUPPORT
As your body changes, Clue helps you track perimenopause symptoms like hot flashes, sleep shifts, and irregular cycles. Use Clue as your menopause tracker to better understand perimenopause with expert-backed education and personalized tools.

Go beyond basic period tracking with Clue Plus, the premium experience designed to give you deeper cycle insights and more powerful tools. Unlock extended period and ovulation predictions, Clue Conceive for fertility planning, Pregnancy Mode, menopause tracking, and unlimited custom tags to personalize your cycle tracking.

🔒 Your data stays private—Clue never sells it.
🌍 Made in Berlin. Protected by EU privacy laws.
🧠 Backed by science. Designed for real life.

support.helloclue.com
helloclue.com

Note: Clue Period Tracker should not be used as a contraceptive.

Take charge of your cycle with Clue—the period tracker, menstrual cycle calendar, and ovulation tracker backed by science and trusted by millions.