Period Diary Ovulation Tracker 9+

Health & Cycle Calendar

Bellabeat, Inc.

    • 4.7 • 65.3K Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


See why over 50 million women trust Period Diary to track their period, ovulation, and overall reproductive health.

- Safe period & cycle tracking with private key encryption
- Secure storage and protection of your data. You are always free to permanently delete all or selected health information at any time.
- Data is never shared with or sold to organizations other than Bellabeat.
- Co-created with leading health & medical experts.

Take the guesswork out of cycle tracking and pregnancy planning. Track your unique menstrual cycle and get the deepest insights and knowledge about your reproductive health.

Period Diary's proprietary AI technology helps you keep track of your menstrual cycle and the symptoms, weight, and temperature that come with each phase. This period tracking app will enable you to better monitor and understand your cycle so that you can make informed decisions about your health, such as family planning and other reproductive health requirements.

In addition to period tracking and fertile window monitoring, Period Diary is one of the top women's cycle tracking apps that includes health and wellness content & insights that work with fluctuating hormones, not against them.


Have you ever asked yourself, “When will I get my period?”. Period Diary can help you chart your cycle, understand where you are in it, and learn how to make use of your hormones' rising and dropping levels. Track and monitor your period and log all the symptoms that come along with each phase of the cycle.

- Period Log
- Period Calendar
- Log flow, symptoms, moods, weight, temperature, and notes


Knowing the fertile window and ovulation day is vital whether you are trying to conceive or not. The Period Diary algorithm will guide you so that you know when "it's time" or when you should be extra cautious.

- Ovulation and fertile window predictions
- Cycle Calendar
- Log discharge, symptoms, moods, weight, temperature, and notes


Observe your baby's development at each stage. Understand what each week, month, and trimester brings and how to fully utilize the phases. Follow professional suggestions to make the most of your pregnancy experience.

Pregnancy and postpartum support


Export your reproductive health data, which includes all your cycle logs and an overview of patterns throughout the month.


Log your cycle & symptoms and subscribe to coaching to receive personalized material tailored to you, your goals, and the stage of your cycle. Period Diary will offer you daily nutrition, workout, and mindfulness advice to help you stay healthy and balanced during your cycle. With over 1,000 articles covering all aspects of women's health, you'll become an expert on your own body and cycle.

Mood support, pain relief, energy boost, digestion help, better sleep, workouts, nutrition, meditations, mindfulness exercises, and more.


Receive reminders when your period is due or when your fertile window starts.

Once a subscription is purchased:

- Payment will be charged to your iTunes Account after purchase confirmation
- Unless auto-renew is turned off at least 24 hours before the end of the current period, subscriptions renew & charge automatically
- After purchase, user can modify their subscriptions and turn off auto-renewal in their account settings
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication

Terms of Service:

What’s New

Version 4.3.8

Hi Bellas,
We'd like to officially announce the Private Key Encryption feature is in the app! Keep your most sensitive data safe and rest soundly at night knowing only you can access it. We hope you all enjoy this new feature as we as the several other fixes, adjustments, and upgrades.
The Bellabeat Team

Ratings and Reviews

4.7 out of 5
65.3K Ratings

65.3K Ratings

Raven_Gra5ce ,

Idea for Improvement

This is a great app, I really appreciate the ease of use. The ability to keep notes on each day. I just have an idea to improve the weight feature. The temperature feature when activated by double tap is automatically at 98.0 which is average for most people, however with the weight one it is automatically at 110.0 which is not as average for every person using this app. Weight is very fluctuating for many and I know that for myself, I have to scroll a lot to get to my weight. I feel like there should either be a way to type in your weight or if you keep the scroll make it so when you double tap it to activate it is set at your last recorded weight and then you can scroll and adjust from there. Either one would be more efficient. Thank you for this app and I hope to see this improvement in the future!

Developer Response ,

Hi there, thank you for your lovely feedback. We appreciate your insights, as we are continuously working on improving the app functionality and performance and it is very important to us to hear about the improvements our users would like to see. Our team is working very hard on implementing new features, so make sure to subscribe to our newsletter and social media to keep in touch with all the updates. Best, Bellabeat

Nicknamewhatevernumbernottaken ,

Accepting the terms

This app was actually okay until I updated because nowadays apps just shut you out until you update them.

Anyway, I actually do not agree to all of the terms, specially the ones mentioning using my personal information for their gain and/ or being able to hackle me with ads pushing whatever products. Also, I did not wish to login through my Facebook since I specially signed up with a designated email. Having me go through FB is crossing the line for me due to the information they could gain from their backdoor access. Unfortunately, I have the dilema of been using this app since my early high school years (at least) and have created MANY notes (due to my cycle and its antics). Agreeing to terms and policy may be “standard”. However, the terms laid before me were not okay with me. It is wrong to *force me to agree OR *I lose all of my data*. It’s invasive, and to use the threat of someone “losing” there data is pure crap.

It has the options laid out as if I can choose what to agree to, yet I could not move forward with using the app UNTIL I clicked to agree to ALL of the options. A small disclaimer states that I can withdraw my consent at any time, but as soon as the app was open, it stated that not agreeing to the terms could “possibly” result in *lost data*.

Developer Response ,

Hi there, thank you for your feedback, we appreciate it a lot. Our team is constantly working on improvements, so we really hope you will give us another chance in the future, and for any questions or help, feel free to contact our Support Team at any time. Best, Bellabeat

AvoQui ,

Staying on TOP of Hormones

I started using the period calendar 2-years ago after having a partial hysterectomy to keep up with the revolving hormonal toll that happens every 28-days. I was looking to make a few calendar notes of cramps, hot flashes, nausea and stuff — instead I have learned MUCH MORE about my body than I could have ever anticipated. This calendar has flowers on it every month that point out to me that these are days of Ovulation. Prior to using this calendar I had trouble keeping up with that stuff. At this stage in my life it Really Makes A Difference. I am 48 and officially in menopause and thanks (in part), to this calendar I am not having a scary and unpredictable time. In fact it’s very predictable (hot flashes, chocolate cravings, sore breast, etc) thanks to this chronicling calendar. I also love that it allows me to make notes on each calendar day about intimacies or fluctuating feelings. Thanks Developers! Way to go!

App Privacy

The developer, Bellabeat, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Purchases
  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Sensitive Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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