Clue Period, Ovulation Tracker

4.4
1.34M reviews
50M+
Downloads
Content rating
PEGI 3
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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
May 8, 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
1.32M reviews
chron
May 3, 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
May 5, 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
April 28, 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
April 28, 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
April 25, 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
April 25, 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