Clue Period & Cycle Tracker 12+

Ovulation Calendar & Pregnancy

BioWink GmbH

    • #59 in Health & Fitness
    • 4.8 • 321.4K Ratings
    • Free
    • Offers In-App Purchases


Track your period, discover patterns in your cycle, and learn how your body works – with Clue.

Clue is more than just a period tracker. The app uses science and data to help you learn how your menstrual cycle affects your mind and body. With Clue, you get period, ovulation and PMS predictions you can trust, detailed insights into how factors such as skin, stress and energy levels can change throughout your cycle, and a science-backed reproductive health encyclopedia at your fingertips. You can also set customizable reminders so you are always prepared for what’s coming. Backed by science, driven by ethics, and female-led, Clue never has and never will, sell user data.

Regardless of your life stage, Clue’s got your back. From period to pregnancy tracking, whether you want to set reminders to take birth control or get ovulation day notifications, or just want to discover your body’s unique patterns, Clue is designed to help you stay informed and make empowered health choices.

** App of the Day Worldwide ** — Apple
** Best Fertility Apps 2022 ** — Healthline
** Top free period tracker app ** — Obstetrics & Gynecology Journal (ACOG)


• Period, ovulation, and PMS predictions for your next three cycles
• Track your period days, flow intensity, menstrual products, or birth control method
• Log 30+ symptoms, cravings, moods, energy levels, exercise, and more to discover patterns in your cycle. The more you track, the smarter Clue gets!
• Set up calendar reminders for your period, PMS, ovulation, or birth control pill
• Keep tabs on your cycle lengths and variations to observe trends and maximize doctor visits
• Ovulation and fertility tracking: log your BBT, cervical fluid, and ovulation tests to boost your fertility predictions
• Pregnancy tracking: Log your pregnancy and postpartum symptoms, and track fetal development week by week with guided content
• Learn about your cycle with educational articles and menstrual health topics curated by Clue's in-house science team
• Track with an intuitive, gender-inclusive app designed for anyone who menstruates
• Integrate with Healthkit, including Health App, Touch ID, and Today Extension

The unsung benefits of using Clue:

• Become the expert on your body
• Be kinder to yourself when your cycle symptoms get you down
• Get curious about how sex drive & your cycle relate
• Gain a deeper understanding of how your body and mind are connected

Loving Clue? Then you’ll love subscribing to Clue Plus! Understand your body even better with these Clue Plus features:

• 6 months of upcoming cycle predictions
• In-depth analysis of your cycle patterns
• Monthly email with your cycle statistics
• Full access to Clue's content tab
• Pregnancy tracking mode

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.

If you run into any trouble, the support team is here to help! Please reach us through the app so we can assist you more effectively. Tap:
1. More Menu
2. Support
Or – directly through the form:
Twitter: @clue
Instagram: @clueapp
TikTok: @clueapp

Terms of Service:
Privacy Policy:

What’s New

Version 59.1

With all the recent discussion about data privacy, we want to reassure you that Clue is a health tracker you can trust.

Your health data will always be kept private and safe, regardless of where you live. We will never disclose this information.

Keeping sensitive data safe is fundamental to our values and what we believe in. Earning our community’s trust is at the core of everything we do.

As a European company, protecting sensitive health data is also required by law. We follow the General Data Protection Regulation (GDPR), one of the strictest privacy regulations in the world. All health data is stored on servers in the European Union.

We’d like to say thanks for using Clue, and for trusting us. In our latest release, you’ll find some usability improvements to keep the app running smooth. If you’re enjoying our app, feel free to leave us a rating and review.

Ratings and Reviews

4.8 out of 5
321.4K Ratings

321.4K Ratings

_a_random_review ,

Amazing App!!! (And suggestion)

This app is AWESOME! Periods, ovulation, pregnancy, and other things like that are SOOOO confusing (obvi) but Clue breaks things down so its easier to understand, which is really useful. And it’s NOT one of those apps that pretends that periods are the same for every person. When you enter something, it recommends articles and other things for you based on what you put in. I just want to say that this app is really useful, and well put together. It’s made by women, so it makes you feel like you’re not alone. And I have a VERY unpredictable cycle and it’s almost always spot on! And if you are taking hormonal birth control, it has options for lighter or no periods. I do have one recommendation for the app, there’s a section that asks what kind of birth control you use, right now, I don’t “have a need for birth control yet”, if you know what i mean, so I think there should be an option for that. Also they’ve started using gender neutral language in their app and even have articles on tips for gender dysphoria on your period, effects of getting testosterone, pregnancy when you’re non binary, pros and cons of daily Binding, and more. A very good, science-based, inclusive app! I would recommend for anyone with a cycle! Edit: one bug I’ve noticed recently is they have like notifications in the app for article recommendations and it’ll have the little red circle and I’ll swipe up and it’ll say ‘no new notifications’

Developer Response ,

Hello! Thank you so much for loving Clue and for your positive feedback :) we are happy that the app has been so helpful for you, and that you find value in its features and in the scientific articles provided. We will keep working in this direction to make Clue an app that more and more people will love! And regarding the bug, please reach us at with a screenshot of the issue, to let us investigate it. Thanks! Ilaria

erika562 ,

More than anticipated

I got clue because I was having a difficult time remembering to track my period on my messy calendar. When I began using it, I found that it was very easy and straightforward to use with customizable tracking options besides just the period bleeding itself like emotional state, pain, ovulation, sleep, digestion, etc. I just wish that the exercise tab had more options to choose from. After using it for a few months, the app had enough data to show me patterns during my cycle which were very enlightening to me. By recording my daily experiences and looking at the generated patterns and predictions I have been learning a lot about my body that I was previously unaware of before. But my favorite thing about discovering clue is that the company provides articles on women’s reproductive health for free on many different issues, and that these articles are fact-checked and use peer-reviewed journal studies as their sources (and list the sources so I could look them up myself if I wanted to). These articles provide me with information I otherwise didn’t have access too or was too embarrassed to ask about like the many birth control options available, how they work, and their pros and cons. Definitely more than just a period tracking app.

dhakdlowlq ,

Great, if you're just menstruating

I like this app. I just started using it maybe 7 months ago, and even though I only had three pretty irregular periods, I was pleasantly surprised at how accurate the ovulation and period predictions were. It only took the first cycle for the next predictions to be shockingly accurate. It was very nice to have a discrete little banner warning me that my period was supposed to start soon. I love all the symptoms we can track, and the cycle analysis over time. Overall I would like to say I love the app. But I can't. Because I'm now pregnant, and there's no way for me to change my life stage to "pregnancy" from "menstruating" without signing up for Clue Plus.

I understand and accept that Clue wants us to pay for the pregnancy information, but I don't understand why I can't even change my status (and effectively put my cycle on "pause") until I give birth. I feel disappointed that this excessively long "cycle" could skew the information they collected from the previous ones, making my predictions less accurate for a long time postpartum. I can't imagine how much more disappointing this would be if I had been using this app for longer.

I also think it would help to add a "postpartum" or "breastfeeding" life stage, since you aren't pregnant anymore but those situations still effect if/when you menstruate.

Developer Response ,

Hello, thanks for leaving us this review. Our pregnancy tracking mode is a paid feature, but we do offer a 7-day free trial where you can test it out and see if you find the content and tracking useful (it comes with tons of guided content, painstakingly written and fact-checked by our science team, as well as a whole suite of pregnancy-specific tracking features). We also have a post-partum life stage you can choose. If you prefer not to join Clue Plus, you can also exclude a cycle in the analysis tab so your data isn’t skewed. Hope this helps! Feel free to write us from the app or from if you have questions. Ilaria


Clue Period Tracker - 1 year
Discover more patterns in recurrent symptoms.
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App Privacy

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, for example, based on the features you use or your age. Learn More

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