Understand your body. Plan around your cycle. Know what’s coming next.
Clue is the #1 women-led period and cycle tracker – science-backed, privacy-first, and built to help you live in sync with your cycle.
Trusted by millions of people worldwide, Clue gives you the knowledge and personalized insight to make confident health decisions, from first period to perimenopause.
Headquartered in Berlin, your data is protected by strict European privacy law (GDPR).
Track your period and cycle
Know when your period is coming, and get personalized predictions based on your unique cycle length, flow, and patterns.
See how your cycle affects how you feel
Track 200+ symptoms and experiences – cramps, PMS, pain, energy, cravings, mood, skin, sleep, sex drive, discharge, and more. Your patterns, in clear charts.
Get ahead of symptoms
See what might be coming, from PMS and cramps to energy dips, so you can plan ahead. Set custom reminders so nothing catches you off guard.
Understand your fertility
Get personalized ovulation and fertile window predictions, based on a clinically-validated algorithm designed to help you conceive.
Stay on track with birth control
Log your method – pill, IUDs, ring, patch, and more. Track your cycle symptoms even without regular bleeding.
Get real answers, backed by science
Explore 400+ articles on your cycle, fertility, sex, pregnancy, perimenopause, and reproductive health.
Use Clue through every life stage
Switch between modes as your needs change. Period tracking, trying to conceive, pregnancy, and perimenopause.
Connect a wearable
Layer your cycle data with temperature, sleep, and heart rate for deeper health insights. Works with Apple Watch, Oura, WHOOP, Withings, Fitbit, and more.
Get more from every cycle with Clue Plus — deeper analysis, advanced predictions, and personalized insights that get smarter the more you track.
A few legal details:
After you choose the Clue subscription that’s right for you & confirm your purchase, the credit card associated with your iTunes Account will be charged. Once purchased, your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. If you currently have a free trial, any unused time will be forfeited when you purchase a subscription.
If you want to renew your subscription, your account will be charged the same amount you paid for your initial subscription, 24 hours before the end of the current period. You can manage or change your subscription at any time, including turning off auto-renewal, by going to the ‘Account Settings’ on your device after the purchase.
Note: Clue should not be used as a contraceptive. Clue is made to help people understand their menstrual and reproductive health by tracking their data, as well as predicting fertile days to aid conception. The app does not substitute professional medical advice, diagnosis, or treatment. Your healthcare provider can give you advice on your specific needs and situation.
Helloclue.com
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Terms of Service: www.helloclue.com/terms
Privacy Policy: www.helloclue.com/privacy
Great app. It would be better if it was possible to set ovulation by yourself. At the moment it is estimated automatically based on previous cycles. Sometimes it differs from the reality. If you set this date by yourself the program will define start of the new cycle more properly
Deleted the app after 9 years of use
catherinecatherine125cat125
I downloaded the app in September 2016. I just saw some blogger showing it in her video and decided to try myself, and got used to it. For the last couple of years, it’s been becoming worse - a lot of functions that used to be free became unavailable, unless paid for. The add became more and more pushy and pervasive. Then the app stopped working without vpn and it was the final straw. For several months, I had to use vpn each time I open the app, and I just got tired of it. Besides, this new app version doesn’t apply to my iOS, so I won’t be able to download it back anyway. And it’s for the best. Your app used to be good. Now it’s just a huge disappointment. I hope it’ll change, though. But I don’t want to be a part of it anymore.
Developer Response
Hi. We've received many reports from users in your region having trouble accessing Clue. This is due to internet restrictions. Clue is committed to equal access to knowledge for everyone, regardless of location. A VPN might solve the issue for now. Also, even if you have an older iOS version, you should be able to download and use an old version of Clue. I hope this helps to clear up any confusion.
loyal user of 5 years, finally deleting the app
tsgrsv
the update is horrendous and clearly not finished. and why would you cut off the support of ios 14? and why not let the user base know? you don't even have any features that would need a higher ios. thankfully Flo still supports me and my preferred version of ios. oh but i can't even transfer my data to finally switch the apps since you took that feature away. just like reminders, clue connect, analysis page etc, all with NO NOTICE. what period app do women on ur team even use since your own has been rendered useless for months now? y'all need new leadership, this is atrocious
Developer Response
Hey, thanks for getting in touch. We’re relaunching the Clue app and some features are still being built. We understand it can be a bit confusing. To give you a better idea of what’s happening, we’ve set up some FAQs: https://clue.link/RpFbq. We’ve got some exciting updates coming up, so please stay tuned and turn on your automatic updates. We really appreciate your patience. All the best, Suzon from Clue.
Good
Дарья Протасевич
I liked this app before there was some error, now I can't adjust my weight. Please fix it.
We update the Clue app every week with bug fixes, performance improvements, and new features to make your cycle tracking more accurate and comprehensive.
If you have questions or feedback for the team, browse our FAQs or contact us anytime through the contact form in the Support Section of the app (More Menu, Support).
Enjoying the Clue app? Feel free to leave us an App Store rating and review.
Version 285.0
The developer, BioWink GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Location
Contact Info
User Content
Identifiers
Usage Data
Sensitive Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More