Clue Period, Ovulation Tracker

4.2
14.1L reviews
5Cr+
Downloads
Content rating
USK: All ages
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About this app

Get to know your menstrual cycle with the award-winning period tracker app Clue. Clue accurately predicts your next period, PMS, ovulation, and fertile days based on the most up-to-date science, and helps you understand your body better with health advice from medical experts.

With Clue, your menstrual cycle and fertility will no longer be a mystery. Track more than 100 different experiences related to your cycle like cramps, hair, skin, feelings, sleep, and sex life, to see if there’s a pattern. Whether you’re trying to get pregnant, want to be more prepared for your period, or curious to learn more about your symptoms and cycle in general, Clue’s got you covered.

Founded and led by women, Clue is an all-in-one period tracker, ovulation tracker, period calendar, and pregnancy app trusted by millions of people worldwide. Clue does not sell your personal health data and will never disclose it.

What can Clue’s period, ovulation, and pregnancy tracking do for you?

PERIOD TRACKING & MENSTRUAL CYCLE APP

• Know when to expect your period and plan ahead with advanced, personalized period, ovulation, and PMS predictions
• View your menstruation, ovulation, and fertile window in a menstrual calendar and period diary
• Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, cravings, pain, sex drive, and much more
• Log your birth control method, including pills, IUD, ring, patch, and more
• Get answers to your menstrual health questions with science-based content written by medical experts
• Learn the science behind sex, fertility, getting pregnant, and irregular cycles with easy-to-understand articles

OVULATION TRACKER & FERTILITY CALCULATOR

Clue’s clinically-tested ovulation tracker technology takes the mystery out of getting pregnant and can easily tell you your ovulation, fertile days, and pregnancy chances.

• Get pregnant faster without temperature checks or pee tests
• Track your period start dates to see pregnancy chances throughout your menstrual cycle
• Get personalized 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 APP & PREGNANCY TRACKER

• Follow your pregnancy and the growth of your baby with weekly updates on size, weight, and development
• Pregnancy calculator and due date calculator
• 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

Get the most out of Clue with a Clue Plus subscription!

Try Clue Plus and experience the all-in-one reproductive health app for every phase of your menstrual cycle and pregnancy:
✓ Full access to science-based articles
✓ A period calendar with six upcoming cycle predictions
✓ Clue Pregnancy (pregnancy tracker)
✓ Clue Conceive (fertility and ovulation tracking)

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

Helloclue.com
support.helloclue.com

Terms of Service: helloclue.com/terms.html
Privacy Policy: helloclue.com/privacy.html

Millions of people around the world trust Clue as their period tracker, ovulation tracker, and fertility app. Start tracking your menstrual cycle and put the power of science and the support of fertility experts in your own hands.
Updated on
24 Oct 2025

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

4.2
13.8L reviews
Shaista Raza
12 October 2025
I haven't actually USED the app yet. I downloaded Clue just a day after my period ended, and then I haven't gotten my period again for 3 months at this point. I've tried mentioning it to my gyne already, but she says it's totally normal. I wish there was a feature where you're prompted to input when your last period was as soon as you download the app, and if it's been more than a month since that date, it would check in like "hey, we see you haven't tracked your period yet, is everything okay?"
7 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
13 October 2025
Hey, thanks for your review. We always enjoy getting feedback from people who use Clue. We’re constantly looking for ways to improve our app and really appreciate your suggestion. We’ll pass it on to the relevant team. All the best, Ilaria - Support Team
Constance Strawn
29 September 2025
this has been my app for several years now. I needed something that was free and, most importantly, did not prompt me toward having children. several months ago the ads started getting very intrusive and it seemed like I didn't have free access anymore. it has been frustrating to get around the ads that pop up with each click, but now they're trying to get me to pay for fertility tracking. I think I'm going to have to be done with this app now. I don't need to be having dysphoria too.
1 person found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
29 September 2025
Hey, thanks for your review. We’re sorry to hear you feel like you’ve been seeing too many Clue Plus ads. We’ll pass your feedback along to the relevant team. All the best, Ilaria from Clue.
Julia Fält
24 September 2025
I love the idea, the team and their principles. The app is really versatile and easy to use. I tend to believe, they live up to their promise and don't sell my private information. The division of content between free and premium is good. And for sure it doesn't contain any third party advertisement... But: I have Never seen this aggressive pushing for subscribing to the premium version of the same app! Tracking takes forever now with pop-ups and long forced waits, and it's just got worse!
Did you find this helpful?
Clue Period Tracker by BioWink
25 September 2025
Hey, thanks for your review. We’re sorry to hear you feel like you’ve been seeing too many Clue Plus ads. We’ll pass your feedback along to the relevant team. All the best, Ilaria from Clue.

What's new

Thanks for using Clue as your trusted cycle tracker and go-to resource for menstrual and reproductive health! We regularly update the app with new features, performance improvements, and bug fixes to enhance your experience—just like in this release.

Feel free to leave us a rating and review in the Play Store.

With <3 from Berlin, Germany