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Clue: Period Tracker, PMS alerts and fertility & ovulation calendar

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 more or less 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. It’s beautifully scientific.
**Now optimized for iOS 9**


Use Clue to:
+ Know when your next period is coming.
+ Get reminded before 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 more or less likely to get pregnant.
+ Track sex, pain, moods, cervical fluid, birth control pills and basal body temperature.

Clue also includes:
+ 31 tracking categories, including period, cramps, emotions, weight, skin, hair, sleep, exercise, energy, cravings and more.
+ The guarantee of no flowers, butterflies, euphemisms or pink - ever.
+ 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 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 backup your data or log in on multiple devices.
+ Enhanced iOS features, including reproductive health integration with the Health app, Touch ID and Today Extensions.

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 2.7

*Bug Fixes*
Nothing to see here. Just some routine maintenance and bug fixes.

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

Great app! But- a few things need to be added

I love this app and all its capabilities and categories of aspects to track. It has made understanding my cycle so much easier. However, I have a two issues, meaning there are two things I feel should be added to the app
-First, I think an addition should be added to the sex category for women who have sex with women. The ability to choose Protected or Unprotected is just too limiting and inaccurate, because it turns entire categories of woman/woman sex into "Unprotected" sex, and therefore forces you to imply that you had "Unprotected sex," and therefore the app thinks you're at risk of pregnancy. (and "Withdrawal" as an option doesn't provide anything either)
-Secondly, an addition to the pain category that let's you record nausea as a symptom. Nausea and morning sickness is a HUGE symptom of my periods, and there's simply no option to record that within the Clue app.

In conclusion, thank you Clue for making a fantastic app! However, I think there needs to be better options for women have sex with women, and means of recording nausea and/or morning sickness as a symptom.

Great app!

This has been really great. There are lots of options to keep track of - flow, pain, sex, etc. and it works really well for predicting your next period, even if you're like me and only track one or two things. It's easy to use and customize, and even lets you set up a password for the app. Also, I love that it's not super obvious that it's a period app. It only predicts your next three periods, but honestly, that's usually enough to be able to plan things around it if you want to. I'm not sure I'll be able to keep using it, since I got an IUD recently and that messes up everything, but I'm gonna try anyway!

Just a few additions

Love this app♥️♥️. Overall this is an amazing app!! It's so useful and helps keep me on track of my period and when I'm fertile. It has anything and everything you can need on this app. Including a beautiful design, it's not all girly like every other period trackers it's a simple design. But what would really bring this over the top is adding more symptoms and feelings etc. they only give you around symptoms and such it will be nicer to have an arrange of options such as more feelings, period flow and more. Also maybe add an appetite section.

Clue: Period Tracker, PMS alerts and fertility & ovulation calendar
View In iTunes
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 2.7
  • Size: 18.1 MB
  • Apple Watch: Yes
  • Languages: English, Danish, French, German, Italian, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
  • Seller:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information
  • Infrequent/Mild Mature/Suggestive Themes

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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