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’d been trying to track my own periods for years - I knew about apps existing, but they all looked so heavily gendered and I just didn’t feel like they were really made with me in mind. It felt like I was stepping into something that was meant for other people who were more “normal” about their gender and their bodies and who could fit in with having a period more easily. Period apps were something girls at school would use and have bright pink notifications pop up and complain about them openly, rather than something you could use as a guy who’s not really “allowed” to have a body like theirs, let alone “allowed” talk about it openly, or “allowed” to like pink, or anything, without that changing the way people see you.Last month I saw it mentioned on a trans forum that Clue had been paying attention to guys and nonbinary people with periods, and somebody saying he’d found it comfortable & welcoming to use while trans, so I downloaded it to try, and it’s been SO much easier than trying to keep track of my own. Really appreciate. Thank you. ❤️It’s just really nice to have a period app where someone like me can be a regular, planned-for, accepted user, rather than an error.
Good but removed useful features in latest update
LarkspurDreamer
I do like using this app and find it works great for me at tracking my period. I don’t mind the new update too much, though I wasn’t using any custom tags/for anything other than period tracking. It is a bit annoying to not be able to swap between days as quickly as you used to, but I’m sure I’ll get used to it in time. I do quite like the new look of the main feature for period tracking, as well as the analysis tab and calendar.One issue I do have with this update is that it removed the explanations from the tracking categories. For example, under the discharge category it has different options such as creamy or sticky, and on the older version you would be able to read a bit about discharge and it would give an example/descriptor of each option. This descriptor applied to literally every option on the app, and I found it so useful to double check and confirm that I was entering the correct information. I do really hope this is added again to the app, as it really helps making sure my periods are tagged correctly.Overall it is a good app, especially with how you don’t have to pay a subscription unless you want access to the journals (which do look fascinating, and if I could afford to I probably would subscribe!), but there are features that have been removed in the recent update that I really believe should be added back in.
Developer Response
Hey, thanks so much for your feedback. We really appreciate you taking the time to write such a thoughtful review. As we're aiming to constantly improve the experience, we've passed you feedback now to the rest of our team. We’re really excited about what’s coming up in the future for Clue–and we hope you are too. All the best, Anna from Clue.
ruined a perfectly good cycle tracker
Gdxph
I never write reviews, but this update has left me frustrated and disappointed. The new update has removed any reason to log anything. Cannot view anything in analysis. Can’t see your own tags. No temperature chart so what’s the point in logging? Can’t use it offline. Doesn’t work with dynamic text so doesn’t fit on screen if you need larger text. Why only part roll out updates so we are waiting in the meantime while not letting us know what we are waiting for? I’ve had to change apps, i no longer recommend it to the women i work with in women’s health. And if you want to be inclusive please remember we’re all going to get to peri-menopause and might be there for a good ten years and weirdly that just isn’t taken into account. Was completely happy with it from at least 2015, now completely useless and i might just hate it. Please let us go back to the old functional version while you work this out in the background. UPDATE in response to the generic response - why release an unfinished update when it leaves the app unusable? Tracking my cycle is a daily affair but i’ve already lost several months waiting for the next release so i’ve had to find another app. How much longer before the final fully functional release is available? And will it do the things we came to rely on before? I would be quite happy to be able to go back to the old version until this ‘update’ is sorted, but until then I have to go elsewhere.
Developer Response
Hey, thanks for your feedback. We feel you. We’re sorry the latest update isn’t what you were expecting. This update was based on feedback from our community and is still rolling out in phases. We are confident that the next phases of the rollout will bring you the value you deserve. Thank you for your patience. All the best, Suzon from Clue.
Why is my medical data now behind a paywall?
E.P.2024
Used Clue for 7 years and am realising now this kind of sensitive data cannot be trusted to app developers. I now find Clue basically non functional and it is gatekeeping my own medical data. Every time I open the app more features have been removed or locked behind a paywall, and I am bombarded with adverts to upgrade to restore previously free features. Even the descriptions of cycle phases are now behind a paywall - it stinks of greed. My entire (five year) cycle history has been locked behind a paywall, I can only see predictions one month ahead which makes planning around my cycle impossible, all my custom tags were deleted and still have not been restored, no offline functionality (my GP surgery doesn't have data coverage so the app is medically useless to me), no easy way to track multiple symptoms across various days. It is laughable to be harassed to upgrade to the paid app when the free version is essentially non functional and I no longer trust the company with my data. There is no way I can see to even export this sensitive medically pertinent data. I deeply regret providing Clue with so much of my personal data as now the apps function has been eroded I fear what purpose my data is serving. I have never seen an app tank itself as successfully as Clue did following the feature stripping update. Clearly capital interest won out over providing a medically sound, functional app. Would give zero stars if possible.
Developer Response
Hi there, we’re sorry to hear that you’re frustrated and I hope you know that we’re listening. All of your tracked data is still visible in your Calendar View. It’s just that deeper analysis and data visualization are now part of Clue Plus. Why the change? In order to keep making a difference, we have to be a financially sustainable company. Because of our firm position to keep your data private and safe, we don’t make money from ads like many other companies do. This is why we introduced our paid subscription with additional features, Clue Plus. We will always make sure a free version of Clue is available to those who need it, and we want to continue providing this without compromising our commitment to keep Clue safe and ad-free. If you ever want an export of your data, that’s available to you by emailing trust@helloclue.com. The descriptions of the luteal and follicular phases are a new feature; and with the free version of Clue it's possible to see the future predictions of 3 cycles. Regarding using the app offline, we removed this to decrease the chances of data loss. In the previous version of the app, offline syncing was causing errors resulting in data loss. It's indeed possible to track multiple things across multiple days: tap "Track" > track everything you need for the current date > then, from the calendar strip at the top of the screen, select another day > track everything you need > repeat this for any other day you need > only at the end tap "Save". Finally, about your custom tags: if you reach out to us to request your data, we'll also be happy to look into this and see if we can find them and restore them. Hope this helps, Ilaria from 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 281.0
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
