Clue Period & Cycle Tracker

Name: Clue Period & Cycle Tracker
Rating: 4.8 (389703 reviews)
Author: BioWink GmbH

Ovulation & Fertility Calendar

Only for iPhone

Free · In‑App Purchases

390K Ratings
Ages

13+
Years
Category

Health & Fitness
Developer

BioWink GmbH
Language

EN
+ 22 More
Size

255.9
MB

iPhone

Clue is the #1 women-led period and cycle tracker for understanding your body and how hormones shape your everyday experiences. Loved and trusted by over 100 million women and people with cycles worldwide, Clue supports confident, informed decisions about your health. Whether you’re tracking your period, trying to conceive, navigating perimenopause or simply getting to know your body better, Clue’s got you covered. Backed by science and headquartered in Berlin, your data with Clue is protected by some of the strictest data privacy laws in the world (GDPR). New: Connect your wearable with Clue. Combine Clue Plus insights with your temperature trends, sleep, and heart rate biometrics to better understand your fertility and health. PERIOD & MENSTRUAL CYCLE TRACKING • Know when to expect your period and plan ahead with advanced, personalized predictions • Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, PMS, cravings, pain, sex drive, and much more • Review an analysis of your past periods and cycles, including average cycle length, period length, period flow, and cycle variation • Log your birth control method, including pills, IUD, ring, patch, and more • Set up calendar reminders for your period • Sync your period data with Apple Health • Get answers to your health questions with science-based content that breaks down complicated topics like fertility, STIs, and the science of sex into easy-to-understand articles FERTILITY & OVULATION CALCULATOR Clue’s clinically-tested technology takes the mystery out of getting pregnant and can easily tell you your most fertile days. • Get personalized ovulation and fertility predictions for the best time to try or do home insemination • Access tips and advice from fertility experts to help you understand the science behind getting pregnant PREGNANCY TRACKING • Follow the growth of your baby with weekly updates on size, weight, and development • Track your body's changes during pregnancy, like increased smell and taste, pregnancy glow, sleep quality, the supplements you take, and more • Receive weekly tips and support from OB-GYNs and Nurse Midwives PERIMENOPAUSE • Track hot flashes, sleep changes, your mood, and more • Stay on top of your changing cycle • Learn how your body is changing with expert-led articles Get the most out of Clue, plus access to all four tracking modes (like Clue Conceive and Clue Pregnancy), with a Clue Plus subscription! 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

Ratings & Reviews

4.8

out of 5

390K Ratings

Great again!!!
07/01/2024

cat-username
For anyone that was annoyed by the big update a few years back, the app is lovely again and has lots of customization options! It can be annoying how often you get pop-ups about going premium if you’re using the free version, but it was worth the cost for me so I don’t mind too much. It’s a kinda silly detail, but I really love the app icon options! They’re so cute and make it way easier to tell which app is which at a glance!Old Review: I appreciate the feedback from the team and it seems like improvements have been made. It’s still running a little slow (buffers before and after tracking anything) and I’m still frustrated with the whole situation (it was a great app I can’t figure out why they changed all of it??),, but I do believe that they are trying fix it and overall I still like the company. Hopefully I can bring my review back up to 5 stars soon. ——— (Original review below) ——— I loved the app but they removed two of the main features that made it useful, so I think I’m gonna have to delete it soon. The missing features are: 1. The ability toggle what you wanted to track so you didn’t have to sort through a ton of things you don’t use. I don’t want to use this app to track my sleep, or weight, or diet, or most of the other options. It takes way longer to do that though bc I can’t find the button for anything. 2. Birth control seems to be gone entirely! I used to use the app to keep track of when I missed doses or took them late and for notifications reminding me when to take it! Huge loss.

Developer Response
Hey, thanks for taking the time to share your positive feedback with us–it means a lot! Happy tracking from all of us in Berlin. All the best, the Support Team at Clue.
Great again!!!
07/01/2024

cat-username

For anyone that was annoyed by the big update a few years back, the app is lovely again and has lots of customization options! It can be annoying how often you get pop-ups about going premium if you’re using the free version, but it was worth the cost for me so I don’t mind too much. It’s a kinda silly detail, but I really love the app icon options! They’re so cute and make it way easier to tell which app is which at a glance!Old Review: I appreciate the feedback from the team and it seems like improvements have been made. It’s still running a little slow (buffers before and after tracking anything) and I’m still frustrated with the whole situation (it was a great app I can’t figure out why they changed all of it??),, but I do believe that they are trying fix it and overall I still like the company. Hopefully I can bring my review back up to 5 stars soon. ——— (Original review below) ——— I loved the app but they removed two of the main features that made it useful, so I think I’m gonna have to delete it soon. The missing features are: 1. The ability toggle what you wanted to track so you didn’t have to sort through a ton of things you don’t use. I don’t want to use this app to track my sleep, or weight, or diet, or most of the other options. It takes way longer to do that though bc I can’t find the button for anything. 2. Birth control seems to be gone entirely! I used to use the app to keep track of when I missed doses or took them late and for notifications reminding me when to take it! Huge loss.
Developer Response 07/02/2024
Hey, thanks for taking the time to share your positive feedback with us–it means a lot! Happy tracking from all of us in Berlin. All the best, the Support Team at Clue.
More than Just a Period Tracker
12/23/2022

Queenbri2302
I honestly can’t thank the creators of this app enough. I’ve been using this app for years and Clue has continued to update their app to improve function and usefulness for the masses. It not only tracks your period, but just about anything else health-related, too! It follows your moods, cravings, energy levels, exercise levels, weight, acne, you name it. If you mess up with following your period, you can even go to your analysis section and choose to omit a specific cycle from your overall period tracking; for example, I forgot to track my periods for a few months. When I came back, I simply hid that cycle from in history so it wouldn’t skew my future period predictions. Even from an educational standpoint, the app offers plentiful resources to gain access to information about contraception, love and sexuality, fertility, and even postpartum symptoms. You can use this app to do, literally, WHATEVER you need—it all depends on how much information you pour into it. The more data you enter, the more accurate and helpful the app will be for you. It also helps you be more attentive to what you’re feeling and how every internal and external factor is influencing all the different aspects of your personal health. I love how expansive and all-encompassing Clue is, and it has become a staple in my own health/self care journey. Thank you, Clue!

Developer Response
Hi, we really appreciate you taking the time to write such a positive and thoughtful review. Thank you for sharing what you find useful, it's really helpful to hear what does work for users of the app. I have shared this with the rest of the team, it will make their day! We’re really excited about what’s coming up in the future for Clue and we can't wait to bring more features and functionality to our users. Thank you again, Rhiannon from Clue.
More than Just a Period Tracker
12/23/2022

Queenbri2302

I honestly can’t thank the creators of this app enough. I’ve been using this app for years and Clue has continued to update their app to improve function and usefulness for the masses. It not only tracks your period, but just about anything else health-related, too! It follows your moods, cravings, energy levels, exercise levels, weight, acne, you name it. If you mess up with following your period, you can even go to your analysis section and choose to omit a specific cycle from your overall period tracking; for example, I forgot to track my periods for a few months. When I came back, I simply hid that cycle from in history so it wouldn’t skew my future period predictions. Even from an educational standpoint, the app offers plentiful resources to gain access to information about contraception, love and sexuality, fertility, and even postpartum symptoms. You can use this app to do, literally, WHATEVER you need—it all depends on how much information you pour into it. The more data you enter, the more accurate and helpful the app will be for you. It also helps you be more attentive to what you’re feeling and how every internal and external factor is influencing all the different aspects of your personal health. I love how expansive and all-encompassing Clue is, and it has become a staple in my own health/self care journey. Thank you, Clue!
Developer Response 12/26/2022
Hi, we really appreciate you taking the time to write such a positive and thoughtful review. Thank you for sharing what you find useful, it's really helpful to hear what does work for users of the app. I have shared this with the rest of the team, it will make their day! We’re really excited about what’s coming up in the future for Clue and we can't wait to bring more features and functionality to our users. Thank you again, Rhiannon from Clue.
Why no way to report birth?
08/31/2025

BlueSock223
Great app. Have used for years to track my cycle, and found it very helpful when I was trying to conceive and throughout my pregnancy. The one thing that’s missing that I think is a huge oversight is a way to indicate that you have given birth. The FAQ on their website says to just write it in the daily notes section. Not really that helpful as that doesn’t give the app any info, and I certainly don’t need a reminder. I switched from pregnancy mode back into regular mode and the app retained no memory of the fact I was pregnant, it was like “oh you haven’t logged a period in 10 months? Something’s wrong, girl.” And then for the next 5 months my cycle was very irregular, which is completely normal when you’re breastfeeding. The app remained concerned. Even now, my kid is almost a year old and my cycle has pretty much returned to how it was pre-pregnancy, the app is not very good at predicting when my next period will be because the average cycle length is still being skewed by the time I was pregnant, which the app views only as a very long menstrual cycle. This app is so detailed in everything else, it feels hilarious that they have neglected to include this. Give me a button that says “gave birth!” and another one for reporting a pregnancy loss, and make sure that information then influences the advice and expectations the app gives you in the months following. I feel that Clue could do this beautifully. They already have so much great education available on the app.

Developer Response
Hey, thanks for your review and we're sorry that the app doesn't yet have a way to report that you gave birth. We've passed your feedback on to our team. In the meantime, you can make it so that the time during which you were pregnant won't affect your averages and predictions: go to the Analysis tab > scroll down to your cycle history > select that cycle from the three dots at the right of the screen > enable the option to hide that cycle. This way, it won't be taken into account for the calculation of your current cycles. All the best, Ilaria - Support Team
Why no way to report birth?
08/31/2025

BlueSock223

Great app. Have used for years to track my cycle, and found it very helpful when I was trying to conceive and throughout my pregnancy. The one thing that’s missing that I think is a huge oversight is a way to indicate that you have given birth. The FAQ on their website says to just write it in the daily notes section. Not really that helpful as that doesn’t give the app any info, and I certainly don’t need a reminder. I switched from pregnancy mode back into regular mode and the app retained no memory of the fact I was pregnant, it was like “oh you haven’t logged a period in 10 months? Something’s wrong, girl.” And then for the next 5 months my cycle was very irregular, which is completely normal when you’re breastfeeding. The app remained concerned. Even now, my kid is almost a year old and my cycle has pretty much returned to how it was pre-pregnancy, the app is not very good at predicting when my next period will be because the average cycle length is still being skewed by the time I was pregnant, which the app views only as a very long menstrual cycle. This app is so detailed in everything else, it feels hilarious that they have neglected to include this. Give me a button that says “gave birth!” and another one for reporting a pregnancy loss, and make sure that information then influences the advice and expectations the app gives you in the months following. I feel that Clue could do this beautifully. They already have so much great education available on the app.
Developer Response 09/02/2025
Hey, thanks for your review and we're sorry that the app doesn't yet have a way to report that you gave birth. We've passed your feedback on to our team. In the meantime, you can make it so that the time during which you were pregnant won't affect your averages and predictions: go to the Analysis tab > scroll down to your cycle history > select that cycle from the three dots at the right of the screen > enable the option to hide that cycle. This way, it won't be taken into account for the calculation of your current cycles. All the best, Ilaria - Support Team
Pretty good!
07/13/2021

aceemo
I don’t normally write reviews for apps but I think it may be helpful to a person considering the app idk tho. I will say I’m only on my 13th-ish cycle ever (like in my life) so I started using clue right when I got my first period 13 cycles ago and I was very frustrated for awhile because clue would be wildly off and I would have an extremely heavy flow the first day in the beginning and it would come without warning so I wouldn’t know till it was to late. Needless to say I lost a lot of underwear because of it, but after complaining to my poor friends about how upset I was that the app was so off everything time but like 4 weeks or entire months I would still keep logging my data keeping hope. AND MY HOPE I THINK WORKED?! I think if you’re a new user to the app it may take awhile for clue to learn your cycle and patterns which makes complete and logical sense I just am overdramatic. So 13 cycles later it doesn’t have it quite nailed yet but this most recent cycle it was only 4 days off which is substantially better than weeks or months. I have a feeling with how much better it’s gotten it’ll continue to get more accurate tho and I’ll love it even more since it only has 13 cycles with me and the people raving it have been using it for like 4 years which it crazy. Great app tho I love that it’s not bam hyped feminine in your face like how I heard other apps can be. In conclusion it’s great once it gets to know you it’ll be frustrating at first cuz it’ll be off (in my experience) but worth it!
Pretty good!
07/13/2021

aceemo

I don’t normally write reviews for apps but I think it may be helpful to a person considering the app idk tho. I will say I’m only on my 13th-ish cycle ever (like in my life) so I started using clue right when I got my first period 13 cycles ago and I was very frustrated for awhile because clue would be wildly off and I would have an extremely heavy flow the first day in the beginning and it would come without warning so I wouldn’t know till it was to late. Needless to say I lost a lot of underwear because of it, but after complaining to my poor friends about how upset I was that the app was so off everything time but like 4 weeks or entire months I would still keep logging my data keeping hope. AND MY HOPE I THINK WORKED?! I think if you’re a new user to the app it may take awhile for clue to learn your cycle and patterns which makes complete and logical sense I just am overdramatic. So 13 cycles later it doesn’t have it quite nailed yet but this most recent cycle it was only 4 days off which is substantially better than weeks or months. I have a feeling with how much better it’s gotten it’ll continue to get more accurate tho and I’ll love it even more since it only has 13 cycles with me and the people raving it have been using it for like 4 years which it crazy. Great app tho I love that it’s not bam hyped feminine in your face like how I heard other apps can be. In conclusion it’s great once it gets to know you it’ll be frustrating at first cuz it’ll be off (in my experience) but worth it!

Thanks for using Clue. This update includes bug fixes and performance enhancements. If you're enjoying the app, feel free to leave us a rating and review.

Version 260.0

5d ago

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:
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The following data may be collected and linked to your identity:
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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

Supported Features
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What’s New

Version 260.0

App Privacy

Data Used to Track You

Data Linked to You

Data Not Linked to You

Accessibility

Supported Features

VoiceOver

Voice Control

Larger Text

Dark Interface

Reduced Motion

Captions

Information

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