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Glow - Fertility Tracker, Ovulation Calculator, Menstrual Cycle & Period 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 & 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, and 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.
+ Integrate key fertility data with Apple's Health app.
+ Sync with other health apps such as Jawbone, MyFitnessPal, Fitbit and Misfit.
+ Fertility treatment support for IVF or IUI patients.
+ Partnership with leading fertility clinics such as Boston IVF, Shady Grove Fertility and RMA NY.
+ 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,ovulation calculator and more.
+ Set medication, ovulation, contraception, and period tracker reminders.
+ Make charts of your menstrual, ovulation, and fertility data.
+ Review past periods, menstrual cycles and ovulation dates to better understand fertility.
+ Five-day and monthly calendar views on period tracker show next fertile window, ovulation day, upcoming period.

+ Get support from the vibrant Glow Community, unmatched by other ovulation calculators.
+ Continue ourney 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.

Glow is free to download and use. Should you choose to upgrade to Glow Premium, you will unlock the following features:
- Comparative Insights: "Is this normal?" Compare with millions of women
- Premium Articles - Next level fertility facts
- Private messaging: Find friends . Glow together.
- Custom profile: Stand out from the rest.
- Premium support: Jump the queue!

$7.99 for month-to-month
$3.99/month for 1 year
$59.99 for lifetime
(subscription works across all Glow company apps!)

Payment will be charged to your credit card through your iTunes account at confirmation of purchase. Subscription renews automatically unless cancelled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing.

Subscriptions can be managed and auto-renew turned off in Account Settings in iTunes after purchase. Once purchased, refunds will not be provided for any unused portion of the term.

For full Privacy Policy and our Terms of Service:

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 5.7.0

Completely revamped BBT charts! Our new Advanced Cycle Chart pinpoints your day of ovulation via eleven variables and easy chart overlay. Plus access to new articles on BBT and more. Get ready to get body smart!

iPhone Screenshots

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Apple Watch

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Customer Reviews

5 stars!

I've been using Glow for a long time and it's been extremely helpful at tracking my period and ovulation! I love that it gives me tips and reminders, plus a bunch of other great features I had trouble finding in other apps.
I switched to a new phone and didn't have any of my old apps on my new phone. I was afraid Glow was going to have me start all over again (which felt like a bummer because Glow becomes more accurate with every daily log you put in). Well, when I downloaded the app, I was reminded by the fact that it made me create an account when I first downloaded it! ALL OF MY INFO IS SAVED! I am so happy! I had forgetting about the login info because it has a great option where you stay logged in on the app and use a passcode to get into the app. I've had issues with other apps in the past and I'm so glad Glow isn't one of them!

Thanks for making sure my health is a priority!


I love this app. Started using it two months ago. I haven't had any luck in becoming pregnant just yet, but I've learned a lot from this app and it has been close to 100% accurate on my cycles, unlike other apps that have been way off...UPDATE: a year later, I now have a beautiful baby boy who just turned 3 months! :) thank you for the assistance, Glow... I am now currently using the app to AVOID getting pregnant again, as we are not planning on having anymore children. I still love the app, but I do wish the free version had more useful articles. The articles used to be one of my favorite features before you made an upgrade version.


Has way more then just tracking your period and ovulation, it has all these other things i've never heard of until i got the app, also gives you advice and tips & lets you know what to do when you log in your symptoms or feelings, has chat areas where you can just read Q&A's or you can post your own Q or answer someone elses & can also do so anonymously if you want to.

Helps for people trying and avoiding pregnancy, and much more! This is my favorite app & I still used it even once i got on birth control and didn't need to track my period.

Glow - Fertility Tracker, Ovulation Calculator, Menstrual Cycle & Period Tracker
View in iTunes
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 5.7.0
  • Size: 149 MB
  • Apple Watch: Yes
  • Language: English
  • Seller:
Rated 12+ for the following:
  • Infrequent/Mild Medical/Treatment Information

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

Customer Ratings

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Top In-App Purchases

  1. Glow Premium$47.99
  2. Glow Premium$7.99
  3. Glow Lifetime Premium$59.99
  4. Glow Credit$0.99