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Clue - Period Tracker

By BioWink GmbH

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Clue is a period tracker that predicts dates for your next period, PMS and the days you’re most likely to get pregnant. Are your moods connected to your cycle? Just track what you’d like to know more about, and Clue takes care of the rest. Confident, scientific - and not pink. **Now available for Apple Watch**


Use Clue to:
+Know when your next period is coming.
+Get reminders for your next period, PMS and fertile window - both on your iOS device and on Apple Watch.
+Find the unique patterns of your cycle.
+Know which days you’re most likely to get pregnant.
+Track sex, pain, mood, cervical fluid, birth control pills and basal body temperature.

Clue also includes:
+New integration with Apple Watch, showing you the time of your cycle at a glance.
+The Clue Cycle Report, a visualization of your personal patterns that you can save, print and share with your doctor.
+The fastest data entry of any period tracker available.
+In-depth descriptions about the menstrual cycle, complete with medical and scientific references.
+An algorithm that learns from the data YOU input. The more you use it, the smarter it gets.
+A customizable passcode to protect your privacy.
+Historical overview of your past cycles to easily observe trends.
+An optional account login to back up your data or log in on multiple devices.
+iOS 8 features including: Touch ID, Today Extensions and HealthKit integration.
+The guarantee of no flowers, butterflies, euphemisms or pink - ever.

Recommended by Buzzfeed, The New York Times, Wired, TechCrunch, The Daily Mail, VentureBeat, and many more.

**What people say about Clue – Period Tracker**

“Clue is perfect. With other apps, I quickly got tired of spending 5 minutes each day inputting my information. It only takes 30 seconds with Clue."

“This is exactly what I wanted - a straight-forward app that doesn't look like pink flowers and sunshine threw up all over it.”

“I've tried nearly a dozen period tracking apps and this one is in a league of its own. Pioneered by a woman who sought to empower other women. Success!”

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

**Please say hello**
We love hearing from Clue users. Send your feedback, questions and suggestions to

**Want more Clue?**
Our blog:

What's New in Version 1.9.2

What’s new with Clue:

**Clue in Portuguese**
Olá! Clue is now available in Brazilian Portuguese.

**Updated Cycle Report**
You can now select which data types you want to see in your report and they will be grouped by category.


Love Clue? We’d be very appreciative if you’d rate us in the App Store. More positive ratings = more people can find and benefit from fast, accurate and beautiful (and not pink!) cycle tracking.

iPhone Screenshot

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Apple Watch

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Customer Reviews

Beautifully functional, a must-have

I'm not sure I can tell you a single thing I don't like about this app. It is streamlined, accurate adaptable, discrete, not Barbie-pink, and functional. Like any self-respecting woman, I hate being surprised by my time of the month, so this app is an essential for me. The last app I used was glitchy, obnoxiously pink, and had discussion boards that weren't always appropriate. This is 1000 times better. I appreciate the app logo and name that don't scream "period tracker" and the locking option that means that other people can't just open it by accident and see TMI. I love that it adapts to your body's pattern over time (as long as you give it enough info to go off of and your period is kind of consistent). I just got a new phone, and one of the recent updates meant that I could just log into my Clue account on my new phone and immediately have all the same history and data. Yay! The updates continue to make this app better every time.

Excellent, Life-Changer!

I have tried several period-tracking apps before, but stuck with this one for the past two years. I love how user friendly this app is, and how accurate. I have fairly irregular cycles, but they do have a pattern. Clue has accurately predicted my cycles every time. I also really love that I can backup my information so that I never have to lose all the tracking I've done. It makes tracking my cycles so much easier, especially since I'm always so busy. I don't have time to track my cycles on paper, but now I don't have to guess my cycles. This app is a breeze to work with, and I LOVE it. I recommend all my female friends to get it pretty regularly, if they don't already have it (many do, and also love it). Finally, my favorite color is blue, not pink. It is refreshing (and weird) that this is the only app I've found for cycle tracking that isn't pink all over. Really? We're women. And pink was randomly selected for girls by society, anyway.

Incredibly Useful--and Easy

I have been using this app for a few months and already it's been very useful and a huge comfort. No more guessing, thinking, "Huh, it's been about a month, hasn't it?" Clue sends me a notification on my device before its predicted date of the start of my period, and even though I've only entered the data of a few cycles since I started using it a relatively short time ago, it's pretty accurate. It allows me to look ahead a few months, too, so I can anticipate the inevitable. It's also easy to use and visually appealing, allowing you to make valuable notes on your mood, pain, and other factors during your cycle. It takes virtually no time to enter data and it is therefore not a burden to do so. I would recommend this to any woman who wants to be more aware of her cycle.

Clue - Period Tracker
View In iTunes
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 1.9.2
  • Size: 14.1 MB
  • Apple Watch: Yes
  • Languages: English, Danish, French, German, Italian, Portuguese, Spanish
  • Seller:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information
  • Infrequent/Mild Mature/Suggestive Themes

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.

Customer Ratings

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