Period Tracker

Contains adsIn-app purchases
361K reviews
Content rating
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About this app

Period Tracker is the easiest way to track your periods!

* Press a button at the start of your period every month. Period Tracker logs your dates and calculates the average of your past 3 months' menstrual cycles to predict the start date of your next period.
* View your current and future period dates, ovulation and fertile days, your moods and your symptoms in a simple month-view calendar.
* Decorate your phone with an icon that looks great on your home screen and that's discreet. It reads simply "P Tracker."

* Take daily notes of moods, symptoms, and intimacy.
* Easily view the number of days until next period or number of days late.
* Know when you're fertile with flowers that show on your homescreen during your predicted ovulation and eight day "fertile window."

Please email comments and suggestions to

Disclaimer: Period Tracker period and fertility forecasts may not be accurate and should not be used to prevent unwanted pregnancy. To forecast ovulation Period Tracker calculates 14 days before the projected start date of one's next period. Forecast accuracy depends on a number of factors including how regular one's cycle length is, when one actually ovulates during the cycle, and how many periods have been logged in the app. Anxiety, stress, diet, nutrition, exercise, environment, medications, age and other factors can also affect one's cycle from month to month.

By downloading this app you agree to the End User License Agreement at .
Updated on
Dec 7, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance
This app may collect these data types
Personal info, Health and fitness and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

352K reviews
Fawn F
November 5, 2023
I bought the premium version a long time ago and have used this app for probably 7 years. Ive always loved it. But now they changed it so you only get premium services if you pay a *monthly* fee EVEN if you already bought the premium services back when it was a one time purchase. As a customer, this makes me lose my trust. What else will they take away after you already paid for it?
8 people found this review helpful
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July 16, 2023
I like this app and have used it for years because it was originally the best available. However I wish it would come out with a new version that syncs with apple or Samsung health. Im tired of manually tracking everything in two places. I want to keep using this app but also have it available with all of my other vitals and health info.
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July 2, 2023
I've been using this app religiously for ten years, and it STILL does not accurately predict my cycle. I've played with the settings and tried advanced prediction, but the app is basically worthless. I was also an original premium subscriber who is not pleased with the new subscription model. If you're looking, keep looking. This app is not it.
3 people found this review helpful
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What's new

Bug fixes.