Clue Period & Cycle Tracker

4.2
1.41M reviews
50M+
Downloads
Content rating
USK: All ages
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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
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
1.38M 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?"
5 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