Cycles keeps track of your period and fertility without all the inputting and upkeep of similar apps. Irregular cycle? Just rotate the dial to the first red day when your period arrives. That’s it! Cycles automatically adjusts your cycle lengths and forecasts as needed.

Cycles is the only app of its kind designed for *both* of you. We've made it fun to invite your Partner to connect and keep up with your cycle. That way he will be more prepared to provide emotional support, plan trips and romantic evenings at the perfect time without having to ask, and know your most fertile days when planning a pregnancy. Husbands and boyfriends love this app as much as you do!

Track your current period in one glance with a beautifully designed Cycle view, and see upcoming cycles in a scrolling monthly Calendar. Set personal reminders to make sure you remember to Take the Pill, or receive discreet notifications like "The bees are coming" to pencil in romantic evenings when planning a pregnancy. And an optional passcode lock keeps your privacy absolutely secure.

Cycles uses modern and scientifically-researched fertility tracking to help predict fertility, with accuracy up to 95%!


• Track this month's cycle with a quick glance
• Fertile days are displayed in green, your ovulation day in blue
• Early or late this month? Just rotate the dial to recalibrate your period
• Tap the center button to change your period & cycle settings
• Even if you miss a few months, it still works when you come back!

• View your entire cycle instantly on a convenient monthly calendar
• Scroll to see upcoming cycles, even two months at the same time
• Plan upcoming events and vacations around your period
• Takes all the guesswork out of predicting your most fertile days

PARTNER (In-App Purchase)
• Invite your partner with just a tap using Facebook login (or by email)
• Share your cycle info for him to view only
• Your reminders and notes are always kept private, even from your partner

REMINDERS (In-App Purchase)
• Receive discreet notifications when your period is about to start or end
• Playful, customized notifications you can set for fertile days
• Personal reminders with customized messages for anything you choose

• Optional passcode or Touch-ID to protect your privacy
• Discreet name and iPhone icon to prevent curious eyes
• Keeps your period Reminders & Calendar separate from iPhone's built-in apps
• With you wherever you go: for iPhone, Apple Watch, iPad and iPod Touch

When calculating fertility for pregnancy with natural family planning, Cycles takes advantage of scientific research thats is more accurate than the 'rhythm method' of yesteryear and has a real-world failure rate comparable to that of condoms. Even so, this app is designed for informational purposes only and should not be used to prevent pregnancy.

What's New

Version 3.1.8

• Minor interface tweaks and bug fixes.

Customer Reviews

4.5 out of 5

4K Ratings

4K Ratings

Good - but confusing


I was hoping to use the app to track and predict my irregular cycles. The amount of information you can input is awesome- basal body temp, mucus, etc. But it doesn't automatically calculate when your next period will be based off your previous ones you've tracked. You have to input your average cycle length yourself which I find really inconvenient and can be extremely inaccurate. I have to manually count how many days it has been between all of my periods and then add the total days, then divide the total by the number of periods to get the average. It would be so much more helpful if the app did this automatically. Another odd thing is that you can change the current day on the cycle view. Beyond just going back to yesterday to put in information, you can actually change the day to today being the 21st day in your cycle vs the 20th. So again this provides the opportunity for your data to be inaccurate. Other than that, the app is great. It doesn't crash, and it has an easy to use interface.

Fewer Fights! Amazing!


This app has single-handedly reduced the amount of fighting in my marriage by over 90%! As an INTJ guy with the emotional range and empathic abilities of a belt sander, this app has been amazing! It pops up a warning "Stormy days ahead," and I know it's time to stop being purely analytical, and engage in a softer and gentler kind of interaction with my wife. And while this type of behavior is entirely unnatural to me, and perhaps even artificial, doing so has dramatically improved my quality of life!

We've had remarkably poor timing with my wife being on her period during almost every fun/sexy vacation/weekend trip we've ever taken, including our honeymoon, regardless of which one of us plans it. Now I can look months in advance and pick dates to allow for maximum enjoyment for both of us!

Highly recommend this app for any guy who's looking to improve his relationship, or may struggle with understanding human emotions!

Ok for Basic Use Only


Used the free version for years on my iPad without issue. Loved it. Finally got an iPhone and wanted to sync the data. Paid for upgrade to do so. Nothing worked. Tried logging in as me, nothing imported. Tried “sharing with a partner” (my other email address), nothing imported. Contacted support and waited days. Was told to delete app on iPhone and try again. Repeated process of deleting app and logging in as me 10 times or so. Nothing imported. Went back on iPad and opened app... almost 4 years of data disappeared. :/ No recovery option. Boo. I’m in the process of manually adding back in the data- I took screenshots, but it is super tedious because I have to add periods one at a time and wait for it to save. Double boo. For ease of use of tracking, I give it 5 stars easily. Beautiful, simple, intuitive design. The “advanced” features and deletion of my data sunk it.


Perigee AB
25.3 MB
Health & Fitness
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
Age Rating
Rated 9+ for the following:
Infrequent/Mild Mature/Suggestive Themes
© 2017 Perigee AB
In-App Purchases
  1. Cycles Pro $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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