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Clue Period Tracker

By BioWink GmbH

This app is only available on the App Store for iOS devices.


**Rated the top free period and ovulation tracker app by the journal Obstetrics & Gynecology, a publication of the American College of Obstetricians and Gynecologists (ACOG).**

Clue is a period tracker and ovulation app that uses science to help you discover the unique patterns in your menstrual cycle. Use Clue to remind you about your period, PMS, ovulation and fertility.

Millions of women use and trust Clue for accurate and personalized information. It’s quick and easy to track your period, PMS and general health with Clue.

With Clue you can:
+ Track your period, flow heaviness and menstrual products you used
+ Accurate predictions for when your next period is coming.
+ Get calendar reminders before your next period, PMS and ovulation.
+ Track sex, pain, moods, cervical fluid, and more.
+ Log your birth control, or plan for pregnancy.
+ Handy record of your period dates and symptoms
+ Have all your data on hand for doctor’s appointments
+ Import and sync data from other tracking apps like Apple Health
+ Track your basal temperature for even more accurate ovulation and fertility predictions - perfect for if you are trying to conceive
+ Get to know your body and identify unique health patterns and trends

Clue also includes:
+ The guarantee of no flowers, butterflies, euphemisms or pink - ever.
+ In-depth information about the menstrual cycle, complete with medical and scientific references.
+ Dozens of ways to track your health, including period, PMS, birth control, ovulation, cramps, emotions, skin, hair, sleep, exercise, and more.
+ Gender neutral period planner and health information -- for everyone who has a menstrual cycle
+ Analysis of your current and past menstrual cycles, along with an overall average, to easily observe trends.
+ The fastest data entry of any period tracker.
+ An algorithm that learns from the data YOU input. The more you use it, the smarter it gets.
+ Enhanced iOS features, including reproductive health integration with the Health app, Touch ID and Today Extensions.
+ Period calendar view to easily view past period, pms and fertility data, and upcoming predictions for your next three cycles.
+ Suitable for all ages from teenagers upwards.

Please note: Clue – Period Tracker is not a contraceptive.

**We want to hear from you**
We love hearing from Clue users. Send your feedback, questions and suggestions to

**Get clued in -- Follow us online for the latest app and health news**
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What's New in Version 4.0.1

*What's New*
We took care of some pesky little bugs so that your Clue experience can be better than ever.

Customer Reviews

I can’t live without this app.

I have a phobia of breast cancer or finding lumps or anything like that. So every time I would get sore nipples in my mind I always went straight to the negative. With this app I know when my periods coming I can count the days of pre-menstrual symptoms and I can literally know exactly why I’m having tender breast and then I can just go on about my business because everything is logged and everything right at my fingertips and it eases my mind. It’s so weird that ever since I got this app six months ago I’ve been totally regular like... to the day. And I can plan outings and trips based on the calendar and what I might need to bring with me etc.

Extremely useful App

I have been using this app for over a year, and it was the best app for tracking my period. Never experienced any type of bugs or glitches, yet. Easy to navigate, and super simple to enter my information such as flow volume, PMS, and emotions (lots of more). I love the design as well.

Dear developers, thank you so much for creating this great app! I have extra heavy flow on my 1st and 2nd day like I cannot go out or plan my trip. It just too much so I have to wear diaper-type pad (sold in Japan) at night. But this app reminds me and send me a push notifications so I can prepare. I have less accidents than before I used this app.

Great but always room for improvement

This app is truly amazing. You can tell a lot of hard work went into it. However, it could use the addition of tracking breastfeeding/weaning because that affects the cycle. Also they have already included a way to tack pregnancy tests but it seems to be a small glitch that doesn't take a positive one into account. So it thinks you have a super long cycle.

Update: the makers of the app actually read the reviews you write and took the time to email me a response to this one! 😃

Clue Period Tracker
View in iTunes
Offers iMessage App for iOS
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 4.0.1
  • Size: 131 MB
  • Apple Watch: Yes
  • Languages: English, Danish, French, German, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish
  • Seller:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information
  • Infrequent/Mild Mature/Suggestive Themes

Compatibility: Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. 1 Month$6.99
  2. 12 Months$46.99
  3. 6 Months$29.49