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
support.helloclue.com
Terms of Service: www.helloclue.com/terms
Privacy Policy: www.helloclue.com/privacy
I’ve tried many apps and this definitely tops them all, it is so accurate in predicting your period even when it doesn’t come at the same time every month. It predicts 3 cycles in advance as well which is a minus if you’re going away and want to check if you’ll be on. Most importantly it’s very secure. I’ve been using it since 2013 now... love the design, clear, easy to use and not cringeworthy pink everywhere
Prefer the Old App
Jės Lœ
I saw other reviews and it seems we are all on the same page, I know the developers are still working on it so I hope you take into consideration our feedback. I have been a clue user for yeaaarss and have never had an issue until the update, where it's harder to click through the days of the week to see what was previously logged, longer to update my BC updates (which that option regarly dispears from my menu and I have to add it again) and you got rid of the notification reminders to take BC? I have reached out via the app to see if I could get support as I know it might just be that I can't turn it on, but I never heard back. Please bring back the old features we loved whole still updating it to be newer and better!
Developer Response
Hey, thanks for getting in touch. We’re currently in the process of rebuilding the app to make the experience even better. While we do this, some features won’t be available yet. We deeply apologize for interrupting your Clue experience. Our team is working hard to reintroduce the reminders and to improve the tracking experience as soon as possible and we appreciate your patience. We recommend turning on your automatic updates, so you’ll always see the latest features with each new release. All the best, Ilaria from Clue.
Used to be a great app
m124684
I’ve been using clue for many years. Always a free user and I was completely satisfied with the little bits of info I got when I wanted to know more about my cycle, but now all of that is behind a paywall except for the bare minimum. I’m disappointed in the direction they’ve taken and I wont be enticed to pay. If it was the case that they had additional perks to what they previously offered in the free version I would have gladly paid, but instead they’ve made the free version less accessible and difficult to used compared to the old interface.
Developer Response
Hey, thanks for reaching out. We introduced our paid subscription, Clue Plus, so we could bring even more value to the people who use Clue. To keep adding that kind of value, we also need to be financially sustainable. We don’t want to show ads, or sell your data, so the best way for us to become sustainable is by having paid features that have a meaningful impact. Be assured the free version of the Clue app will always be available. This is because we want the app to be accessible and affordable for all people, no matter their budget. All the best, Ilaria from Clue.
Great App, Ruined by Constant Paywalls
gulliooss
Every time I open the app, a full-screen paywall pops up. Not only that, it keeps popping up after almost every action. So I spend about half of time just closing these pop-ups instead of actually using the app.The free version already meets my needs, but this level of intrusion makes me want to switch to another app rather than pay just to make the ads stop. Come on, if you want to promote a subscription, do it occasionally, not constantly at the expense of usability.
Developer Response
Hey, thanks for your feedback. We always appreciate hearing comments from those who use Clue, and learning how we can improve the app. If you have any questions or need help, feel free to check out our FAQ page at https://support.helloclue.com. All the best, Support Team at Clue
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 292.0
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