Clue Period & Ovulation Tracker is a science-packed health and menstrual cycle tracker designed to decode your entire cycle in every life stage – right from your first period, to hormonal changes, conception, pregnancy, and even perimenopause. Clue provides powerful insights into your body's unique rhythm and patterns, giving you deeper understanding of your menstrual cycle, mental health, PMS, and fertility with ovulation predictions and birth control tracking.

Your health data is always protected with Clue under the world's strictest data privacy standards (the EU GDPR), ensuring you always have complete control.


Period and Menstrual Cycle Tracker

• Clue's science-powered algorithm learns from your data to provide accurate predictions for your period, PMS, ovulation, and more.
• Plan confidently with Clue's period calendar, fertility tracker, and ovulation calculator.
• Track 200+ factors like mood, energy, sleep, and mental health to connect them to your menstrual cycle and better understand each phase – great for navigating hormonal changes or cycle syncing.
• Clue's detailed menstrual calendar is an ideal period tracker for teens or those with irregular cycles, helping you recognize patterns and manage PMS, cramps, and conditions like PCOS and endometriosis.

Ovulation Calculator & Fertility Tracker

• Get accurate ovulation predictions using Clue as a fertility tracker—ideal if you're trying to get pregnant without temperature tracking or ovulation tests.
• Use Clue Conceive's clinically-tested algorithm for precise ovulation tracking and daily fertility insights.
• Monitor changes with basal body temperature tracking (BBT tracker).

Pregnancy Tracker & Weekly Support

• Follow your pregnancy journey week-by-week, with tips and insights from certified Nurse Midwives.
• Use Clue as a pregnancy app to track key milestones and symptoms through each pregnancy trimester.

Period, PMS, & Birth Control Reminders

• Set customizable cycle reminders for your period, birth control, fertility window, and ovulation to stay on top of your health.
• Get a period tracker notification when your average period length or cycle length changes.

Manage Health Conditions and Irregular Cycles

• Track symptoms of PCOS, endometriosis, irregular periods, and perimenopause (the transition leading up to menopause).
• Take control with insights on PMS, cramps, and menstruation, with tools for deeper understanding and symptom management.
• Use Clue as an irregular period tracker to manage irregular cycles with more accuracy.

Additional cycle tracking tools in Clue:
• Access over 300 articles from Clue's Science Team, covering menstruation, fertility, pregnancy, birth control, menopause, and more.
• Add daily notes & custom tracking tags for a more personalized cycle tracking experience.
• Clue Connect: Share your menstrual cycle phase, fertility window, and PMS with trusted partners.

Clue's award-winning period and menstrual tracker is rooted in research, with ongoing partnerships in collaboration with researchers at institutions including UC Berkeley, Harvard, and MIT. Help us advance menstrual health knowledge for everyone with a cycle.

Note: Clue Period and Ovulation Tracker should not be used as a form of contraception.

Find support and resources at support.helloclue.com.

Start using Clue as a free period tracker and subscribe for deeper insights and additional ovulation tracker features, as well as Clue's pregnancy and perimenopause tracker.