Clue Period, Ovulation Tracker

4.3
1.32M reviews
50M+
Downloads
Content rating
Everyone
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About this app

Clue is the period tracker and fertility app that puts the power of science and the support of fertility experts in your own hands.

Whether you’re trying to get pregnant, tracking cycle-related experiences, or navigating the changes of menopause, Clue’s got you covered. 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 and inclusive cycle tracker, 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 fertility and menstrual cycle tracker:

✓ Set period reminders to be prepared for your next cycle
✓ Plan around your period, ovulation, and fertile days with a menstrual calendar
✓ Keep track of your contraception and birth control pill
✓ 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, sleep, exercise, 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

Pregnancy tracking categories 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.

MENOPAUSE HEALTH TRACKER

Understand changes as your body transitions to menopause (a time known as perimenopause). Track hot flashes and other menopausal symptoms, and get support with science-based health articles.

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?
✓ 12 months of advanced ovulation, fertile day, and period predictions
✓ Clue Conceive, a fertility and ovulation tracker to help you get pregnant faster
✓ Tips, advice, and expert answers to your reproductive health questions
✓ Clue Pregnancy Mode for a week-by-week pregnancy calendar
✓ Clue Menopause Tracker

support.helloclue.com.

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

Helloclue.com

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.
Updated on
Mar 13, 2025
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info, Health and fitness and 2 others
This app may collect these data types
Personal info, Health and fitness and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
1.29M reviews
Laura Adella
March 8, 2025
It does what it's supposed to as a period tracker. It has a ui that makes sense and can help you plan ahead. However, the ads for the paid version are getting more and more obtrusive. Kinda makes me want to try a different app or just even use a calendar.
3 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
March 10, 2025
Hey there, thanks for sharing your thoughts—we totally hear you. We understand pop-ups can be disruptive. We will always keep essential period tracking features free, but it’s ultimately subscriptions that make that possible and keep Clue running. All the best, Anna Burek - Support Team
danielle brandenberger
January 20, 2025
Constantly asking me to get Clue Plus is making me look for other apps. When I open the app, there's a screen pushing Plus that I have to wait for the X to appear. Then I track a symptom, and there's the screen again. Two stars because I did like and recommend the app to others. I'm just over the disruptive ads. Having it on a banner all the time would be just fine.
53 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
January 21, 2025
Hey there, thanks for letting us know your thoughts - we totally hear you. Pop ups can be disruptive and we know that’s not ideal. While essential features will always be free for everyone, subscriptions help to keep Clue running. We’re always open to feedback though and have shared this with the team. All the best, Ilaria - Support Team
Jessica R
February 6, 2025
I'm very happy with this app overall and wish the pop ups for the subscription would be reduced. I'm grateful there are those who pay for the subscription plan, helping to keep a free version available; however, the frequency of pop ups is too much. Every once is awhile makes sense, but having it come up with almost every press of a button is a lot and negatively impacts the user experience. When I first noticed them, I couldn't find the close button, and thought I had to subscribe to continue.
100 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
February 6, 2025
Hey there, thanks for letting us know your thoughts - we totally hear you. Pop ups can be disruptive and we know that’s not ideal. While essential features will always be free for everyone, subscriptions help to keep Clue running. We’re always open to feedback though and have shared this with the team. All the best, Ilaria - Support Team

What’s new

What’s new? Advanced analysis and tracking options, plus the return of one of Clue's most popular features.

- Track your period cramp severity with brand-new tags

- 12+ exercise activities to track

- Period flow graphs and new cycle overviews in your Analysis Tab

- Clue Connect is back! Share your cycle with a loved one

- Charts of your cycles over time are waiting in your Analysis Tab