Clue Period, Ovulation Tracker

4.4
13.4L reviews
5Cr+
Downloads
Content rating
PEGI 3
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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
8 May 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

4.4
13.2L reviews
chron
3 May 2025
Amazing app. I've been using it for 8+ years now. It's so beneficial to have a store of this data, it's incredibly easy to personalise for free, and is super accommodating (IE, you can change the notification wording to what suits you, it doesn't seem to have many if any gendered terms etc). Couldn't recommend it more as someone who's FTM
2 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
5 May 2025
Hey, thanks for taking the time to leave us a positive review! We really appreciate it. All the best, the Clue team.
Amelie Viccars
28 April 2025
it's an overall good app. I use it mostly just to track my period, and I find that the predictions it makes from my input are usually very accurate. the only con is the way they try and push their subscription. The ad is there when I open the app, and its there when i want to close it. there are also several features locked behind a pay wall. I don't want to buy your subscription, and your app is perfectly usable without one.
10 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
28 April 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, Ilaria - Support Team
Rebecca Reeve
25 April 2025
Still no offline tracking. It would be so handy for people like me who don't always have an internet connection to still track days of periods without WiFi. Also, the app has bugs. Even after the recent update, I can't seem to even load the tracker as it gives me a "sorry, there was a problem" page on the app, which then renders it unusable. Shame, because I've been using this app for years and it's just getting worse and more and more gets taken away from basic and everything goes to premium..
54 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
25 April 2025
Hey, thanks for getting in touch. We’re sorry to hear you’ve experienced some technical issues. Contact us via support.helloclue.com so we can take a look. All the best, Ilaria - Support Team

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