Clue Period, Ovulation Tracker

4.4
13.5L 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
5 Jun 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
13.3L reviews
Bethan Williams
22 May 2025
Really useful and easy to use app! I've used other period tracking apps that were fine, but I felt a bit bombarded by articles, ads and subscription reminders when I just wanted to track and see trends. This app DOES have useful articles, information and analysis, but it's not in the way of the main function of tracking, so I get the best of both. If I could make one suggestion it would be to add appetite tracking. I think it would be really useful, especially for when I see my dietician!
19 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
22 May 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
what a GIANT NERD
3 June 2025
I love that they protect my data and I love all the features available. BUT THE ADS! OH DEAR LORD THE ADS! Every time I open the app they ask me if I want to buy their premium service (Clue Plus). The exit out of that screen is impossible to find and when I do find it, I'm hit with ANOTHER OFFER FOR CLUE PLUS. Any time I switch a page, ANOTHER OFFER. And the app itself runs SUPER clunky. It's so infuriating to work with I'm highly considering just going back to paper tracking. Clue, fix it!!!!
2 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
3 June 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.
R Waters
27 May 2025
I used to love this app, but I find it really bothersome how now there is a prompt to subscribe that takes over the whole screen every time I open it and again every time I finish tracking. Please implement a "do not remind me again" check box. This has been making me want to look elsewhere for a while now, but when I saw "fomo" tactics with "limited time only" and countdowns plastering the screen that decided it for me. Manipulation like that just gives me the ick. Will not be returning.
5 people found this review helpful
Did you find this helpful?
Clue Period Tracker by BioWink
27 May 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

What's new

With Clue’s newest update, you can see which cycle phase you’re in, which hormones are shifting, and how others feel in the same phase. Learn how hormones may affect your mood, energy, or body.

Whether you're curious about cycle syncing, managing PMS, or just want to feel more in tune with your body, this feature is for you.

Explore your cycle phases now by heading to your Cycle View in Clue.