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Glow - Ovulation Calculator & Fertility Tracker

By Glow

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Glow is the world’s best ovulation calculator and fertility companion. Glow's menstrual and ovulation calculator helps women learn about their fertility, whether avoiding or attempting pregnancy. Glow is an ovulation calculator that also records your period, mood, symptoms, sex, and medications; it also predicts your fertility and assists those undergoing fertility treatments like IVF or IUI.

Winner of 2014 Webby for best Health & Fitness app, Glow is an elegant, data-driven ovulation calculator and fertility tracker designed to help you take control of your reproductive health.

+ Innovative ovulation calculator and fertility charts, powered by sophisticated data analysis.
+ Forecast your ovulation and upcoming period with period tracker predictions that get smarter over time.
+ Community and partner support, not found on other ovulation calculators.
+ Personalized reproductive health and fertility insights based on your ovulation, period timing, and menstrual cycle.
+ Reminders about medications, birth control and/or other contraception.

+ Email yourself a PDF of your ovulation results and other health data.
+ Sync your health profile (including fertility data and ovulation days) to the cloud.
+ Sync with other health apps like MyFitnessPal and Google Fit.
+ Fertility treatment support for IVF or IUI patients.
+ Refill your birth control prescription at Walgreens or Duane Reade.
+ More than an ovulation calculator—the only period tracking and fertility companion that focuses on overall women’s health.

+ Daily health log helps you record over 40 different health signals, including BBT, cervical mucus, sleep, stress, weight, exercise, ovulation calculator and more.
+ Set medication, ovulation, contraception, and period tracker reminders.
+ Make beautiful charts of your menstrual, ovulation, and fertility data.
+ Review past periods, menstrual cycles and ovulation dates to better understand your fertility.
+ Five-day and monthly calendar views on period tracker show your next fertile window, ovulation day, upcoming period.

+ Get support from the vibrant Glow Community, unmatched by other ovulation calculators.
+ Continue your journey on Glow Nurture, Glow’s Pregnancy app.
+ Mirror app for your partner--because fertility's a team sport!

Glow First is for those wanting to have a baby as soon as possible. If you choose to join and don’t get pregnant, you will receive funds to help cover the cost of your infertility screening.

Web -
Facebook -
Twitter - @GlowHQ
Instagram - @GlowHQ
Pinterest - @GlowHQ

If you are having technical issues or have any questions about your cycle or period, we're here to help. Please send us an email to:

What's New in Version 4.8.0

Summer is almost here! And just in time, we have spruced up our design, making Glow that much more pleasing to the eye. We made a few other awesome changes as well.

+ You can edit your own topics in the community. Yes! Finally.
+ You can now follow your friends in the Glow Community on their journeys, so that you get a personalized stream of content on your top page.
+ You can customize your home page. Turn on/off health tips, the daily poll and so on, as you see fit.

And last, but certainly not least, we’ve now fully integrated Glow with Apple Watch so that you can get your essential Glow info at a quick glance!

iPhone Screenshot

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Apple Watch

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Customer Reviews

Good app the track AF

I've been using this app for a few months to track my period, and it's been very helpful in helping me learn just how irregular I am. It's also come in handy during my GYN visits in being as accurate as possible when I'm asked the length of my cycle and when the first day of my last period was. My only issue is, in the community section, there's absolutely no way to edit comments, you can only delete them. And what's worse, if you reply to someone else's comment, there's no way to edit it, let alone delete it. There are so many simple, basic capabilities this app lacks, that would really set it over the top. Maybe in the next update, your developers can make it possible to edit not just posts someone creates in the community, but comments and replies as well.

Great app, integrates well with Health

I originally downloaded Glow to have more apps in my arsenal that would add data to Apple Health, but I feel I'm now using it to its fullest. At least twice a week I complete the daily logs, where I can record (perhaps for future reference) how I feel, physical symptoms, activities, etc., that may be consequential to myself or my doctor. The app can be used to try getting pregnant or avoid pregnancies, but either way I feel the app would be equally simple & informative.
Tl;dr: if you want a great "feminine" app on iOS, download Glow.

I’m a huge Glow fan!

Super helpful app!! I downloaded it just to track my period, but I’m learning all sorts of things about my cycle and fertility. Important stuff to know when baby-making is on the horizon :) I also love how Glow gives me health tips tailored to the other things I like to track too, like exercise, sleep, and mood. Plus, it has an ovulation calculator that incorporates all sorts of things like cervical mucus and BBT, so I’ve recommended it to my friends who are trying to get pregnant. Can’t wait for them to join me in the Community :)

Glow - Ovulation Calculator & Fertility Tracker
View In iTunes
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 4.8.0
  • Size: 71.3 MB
  • Apple Watch: Yes
  • Language: English
  • Seller:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information

Compatibility: Requires iOS 7.1 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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