iPhone Screenshots


Lily is a remarkably powerful, yet beautiful and easy way to determine the fertile and infertile phases of your cycle. It is the perfect tool for you to learn more about your body, while being discreet, reliable, and absolutely private!

You want to learn more about Lily and how it works? Head over to http://whimsicallily.com for more detailed information!
Once there, make sure to take a quick look at our privacy policy as well. We are absolutely sure that you will love what you can read there!

Lily lets you evaluate your cycles either based on averages (comparable to the calendar method,) or based on your body's own symptoms using either FAM/NFP (Fertility Awareness Method/Natural Family Planning) from the US, or NFP (AG NFP) developed by workgroup NFP from Germany. Your choice!

Lily can be a great little helper for you to achieve your family planning goals, and it works incredibly well for both: women who are trying to conceive, as well as women who are trying to avoid a pregnancy. Lily is also used by many women who simply want to learn more about their own body!

Evaluating your cycles based on averages is easy as pie, but a little less accurate. And even though the evaluation of your cycles based on your body's own symptoms requires a little more effort, Lily will be able to evaluate your fertility much more accurately – which is especially important if you want to use Lily to help you avoid a pregnancy.

If you want to use Lily's averages-based evaluation method, you can start right out of the box. All you need is the starting day of your past period, or two.

To successfully evaluate your cycles using one of Lily's symptoms-based evaluation methods, all you need is a thermometer labeled for taking your basal body temperature with two decimals behind the dot for °C, or with one decimal for °F – and that's it! You don't need to know or learn any complicated rules, Lily will do the work for you!

Lily also includes these features:
• see the time you are most fertile during your cycle and an estimated for the begin of your next period
• predict your 12 upcoming cycles
• charting of your temperature (Fahrenheit or Celsius)
• charting of your cervical fluid and its changes throughout the cycle
• view your data in the graph and calendar and get detailed information for every day by the touch of a finger
• add details on your love life (with or without protection)
• record interferences that may have lead to higher temperatures
• record period flow and associated symptoms
• record your mood
• password-protect your data
• an extensive in-app help
• discreet name and icon to avoid awkward moments

You can unlock even more features with an in-app purchase (We do have to pay our bills somehow!):
• more tracking menus: Cervical Position, Secondary Symptoms, Custom Notes, Medication, Diary, LH/OPK Test Results, and Menopause Symptoms
• rearrange the 'Your Data' menu, as well as the ability to hide tracking menus you don't need
• a dark theme, including the ability to let Lily switch between the dark and the light theme automatically depending on the time of day or your display brightness
• print your charts and data via AirPrint, or export and send them as PDF documents via email to your physician or anyone else you like
• smart reminders that tell you whenever Lily still waits for important data
• custom reminders for anything you want
• change Lily's pink to any hue you like

Lily was not developed to diagnose, treat, prevent or cure any medical conditions. For any medical related questions, please see your physician.

By using Lily you agree that Whimsical Inc. does not guarantee the method of birth control or pregnancy achievement and is not to be hold liable for an unwanted pregnancy or the unsuccessful attempt to conceive.

What's New

Version 3.6.2

This update fixes a bug in Lily's graph that got introduced for some older devices when we fixed the same bug on newer devices with a previous update. You know, sometimes it just pours… But we're really confident that this particular issue is now properly squashed on all device types. Fingers crossed…!

And while we were at it, we also fixed a couple of other smaller issues, like a problem where Lily's main menu didn't display correctly when run on older iPads, and an issue that led to some rather funky text issues in the Cervical Fluid Reminder menu.

This update also includes the following changes:
• Full support of the new iPhone X, including the new display format as well as the ability to secure access to Lily using Face ID
• The Graph will now also display the date for each day, not just the day of the cycle
• If you have access to Lily's full set of features, you can now also create reminders for certain days of your cycle
• We added 'nausea' to the list of secondary symptoms
• And finally, we also fixed a problem where you were unable to send emails from within Lily when Apple's own Mail app was no longer installed on the device

Ratings and Reviews

4.6 out of 5

75 Ratings

75 Ratings

Great app for tracking


Having tried a couple other apps, Lily is my favorite. It does exactly what I need it to do. Other apps ask for temperature, cervical fluid quality, etc, but don’t always use it in estimating ovulation. Lily is very clear and user friendly. The documentation is very understandable. I thought I fully understood my cycles prior to using Lily, but I realized I was wrong about a few things. I do understand my body a lot better now, and I highly suggest this app. I am a scientist by training, and I love data. Lily is fun to use, and the charting makes it easy to visualize.

Another important feature is that Lily data is completely stored on your phone so you are the only one with access to the data (or anyone you share it with).

Although I didn’t need to purchase anything to get all data from Lily I did anyway to support the company. It’s relatively inexpensive and a one time fee. If you have a couple extra bucks I recommend paying it just to support the app creator and keep this app available!

Very Intuitive charting


This app makes fertility charting easy!
When I was still trying to conceive it was easy for me to look at my charts and figure out the problem.
I loved being able to email charts to my midwife.

Now that I am using it to avoid pregnancy, it is also super easy.

One improvement suggestion: I pinned note about the rules of FAM (dry day rule, peak day rule etc)

Edited: I knocked it down a star after comparing to kindara. Lily is still gorgeous, but the chart had a temperature range that is too large.
The result is that the narrow band of actual bbt looks very squashed. It is much more difficult to visually see the temperature shift.

Also, I know lily highly prizes our privacy, and therefore are reluctant to support tempdrop, where our temp data is potentially viewable by people helping on the 'backend'. But if users are comfortable with this data use, lily really shouldn't care. I want lily to support tempdrop! Tempdrop has done all the coding for the device to synch with various apps automatically. Please support it!

Beautiful App


I found this app by researching the most effective family planning apps. This is the most user-friendly app that I found that met my personal reliability requirements. I can tell a lot of time and money went into creating this app and I believe that because it is so nicely done I will enjoy using it every day. It might seem silly but many symptothermal method charts & apps are ugly and don't make the process fun!

(Also, for one of the reviews that said the app does not provide Fahrenheit temps- it asks when you download the app which unit you'd prefer)


Whimsical Inc.
27.5 MB
Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 9+ for the following:
Infrequent/Mild Mature/Suggestive Themes
© 2010 - 2017 Whimsical Inc.
In-App Purchases
  1. Unlock all Features $5.99


  • Family Sharing

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

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