** App of the Day 2019 **

** Named the top fertility app of 2019 by Healthline **

Clue is a science-backed period and ovulation tracker built for everyone with a cycle. We’re led by women, don’t sell user data, and don’t spam you with ads while you’re using the app. We use gender-neutral language and fund menstrual health research so everyone can track smarter and gain more health awareness. Join our community of over 14 million strong to access fascinating knowledge about your menstrual cycle, science, and yourself!

Clue enables you to better understand your body and your menstrual cycle. Get period, PMS and fertile window predictions you can trust! Set up reminders so you know exactly when your next cycle is about to begin, track your period days, and access health insights tailored to your unique cycle.

Tracking your cycle with Clue (including your moods, PMS, ovulation, cramps and more) helps you find patterns in your health and insights into why you feel certain ways at different times of the month. If you’re trying to conceive, you can use Clue to log your BBT for more accurate ovulation predictions. You also get a Cycle Analysis so you can learn what’s normal for your body over time – perfect for visits to the doctor or your OB/GYN.

** The recommended period and fertility tracking app by Healthline, The Cut, and Obstetrics & Gynecology, a publication of the American College of Obstetricians and Gynecologists (ACOG) **

Period & Cycle Tracking:

+ Get accurate period predictions for your next three cycles
+ Track your period days, flow, menstrual products or birth control method
+ Log your symptoms – like PMS and cramps – so you know when to expect them again
+ 30+ tracking categories to paint a holistic picture of your health in relation to your cycle
+ Easily set up calendar reminders for your period, PMS, ovulation, birth control pill or more
+ Cycle analysis to view your cycle lengths and period history
+ Health insights that can explain your cycle and help identify regularities and irregularities
+ Integration with Healthkit, including Health App, Touch ID, and Today Extension

Fertility & Ovulation Tracking:

+ Log your Body Basal Temperature (BBT) to help estimate ovulation
+ Set up reminders for upcoming fertile days and ovulation predictions

** If you love Clue, you’ll love subscribing to Clue Plus! Your subscription: **

+ Keeps the app and content free for anyone who can’t pay
+ Proves that people care about data privacy—and are willing to support companies that keep data private
+ Contributes to Clue-funded menstrual health research

After you choose one of our plans and confirm your purchase, the payment will be charged to your credit card through your iTunes Account. Once purchased, subscriptions will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period.

If you decide to renew your subscription, your account will be charged the same amount you paid for your initial subscription within 24-hours prior to the end of the current period. At any time you can manage your subscription and turn off auto-renewal by going to the Account Settings on your device after the purchase.

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

Get answers to your questions about periods, sex, and menstrual health at

Twitter: @clue
Instagram: @clueapp

Terms of Service:
Privacy Policy:

What’s New

Version 10.0

Traveling for the holidays? Traveling across time zones can have an impact on your hormones – the further you go, the more likely you are to be affected.

The menstrual cycle is influenced by travel because of its hormonal relationship to your circadian rhythms (your body’s daily cycles). When jumping across time zones, it takes time for your hormones to get back into balance. If you plan on traveling a lot during the holiday season, then you might notice some changes to your period, such as a late start – but don’t worry! Once you get back into a normal routine again, then your menstrual cycles will return to your body’s average length within a cycle or two. #NowYouKnow

From everyone here at Clue, happy holidays!

(We managed to squeeze in some final 2019 performance enhancements and bug fixes. If you run into any trouble, let us know at

Ratings and Reviews

4.9 out of 5
580 Ratings

580 Ratings

ДианаК ,

Still my fav app in the App Store

I just upgraded to Clue Plus - the price is awesome and I’ve been using the app ever since it became available on the App Store. I can’t imagine my life without it and I’m looking forward to those predictions

Kin 235 ,

"To know how" is all about this app Clue

I'm brand new with this app and can say that is making me conscious about managing my cycle in a pleasant way. Thank you! So far so good. ;)

Violinna99 ,

5 stars

The best period tracker ever. I’m using it since 2014, more than satisfied. Super convenient and helpful.


BioWink GmbH
138.1 MB

Requires iOS 11.0 and watchOS 4.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Danish, French, German, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish

Age Rating
Infrequent/Mild Medical/Treatment Information
Infrequent/Mild Mature/Suggestive Themes
In-App Purchases
  1. 12 Months 19,99 лв
  2. 1 Month 1,99 лв
  3. 1 Month 19,99 лв


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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