Last updated on July, 11

🏆 Best Fertility Apps for August 2021

Do you want to have a baby or do family planning? Fertility app is a fertility tracker that helps women identify their period, peak fertility days, and the best time to get pregnant. It’s easy-to-use, discreet, and private – so it can help you plan your future with confidence.

What are fertility apps?

Are you tired of getting caught off guard by your period? Is it tricky for you to calculate when is the best time to get pregnant? If so, fertility apps are here to help you. Fertility apps are tracking apps that monitor your menstrual cycles through a built-in ovulation calendar. Their calendars will provide you information regarding your fertility status, such as the calculated dates of your next period and windows for pregnancy. This helps you get a better understanding of your reproductive health while gaining different benefits along the way.

Why do you need fertility apps?

A woman’s fertility is no easy feat to think about, as it covers essentially your adolescent years up to your menopausal stage. Whether you are a girl that just got her menstruation, a woman intending to get pregnant, or simply a woman who has her period, below are some of the advantages you can garner with the use of fertility apps:


Since people nowadays are constantly using their phones, remembering whether today is the first, second, or third day of your monthly period would be easy. When getting pregnant, the details of your previous monthly cycles are available anytime should your doctor need this information.


Aside from the availability of your menstrual cycle logs right in your mobile devices, you also get to have privacy as you can control who can access your phone. Some fertility apps have the option to share the user’s fertility details with their respective partners, but the beauty of this option is that the decision is still entirely up to you whom you want to share these details with.


Apps for tracking fertility are developed with built-in algorithms made to compute the estimated dates for your next monthly cycle. The accuracy of the estimated predictions is said to increase accordingly with more past inputs and other symptoms the app can refer to. 


Each fertility app comes with different claims and goals for its users, as well as user-friendliness schemes. With the rapid onslaught of numerous fertility apps, you have a vast selection to choose from—different features that would meet your reasons for downloading the app.


Most of these apps are available for free with some in-app purchases. You can choose among the list of the best fertility apps that would meet your intended outcome without necessarily breaking the bank. 

Core features of fertility apps

Out of the hundreds of fertility tracking apps available and ready for you to download, below are the list of core features you would need to look for in your desired fertility app:

Period Trackers

Fertility apps allow you to document the dates of your period in their built-in calendars and provide you the estimated dates of your menstruation for the succeeding months. This helps you to prevent the surprise of your period’s appearance and to recognize the signs of its arrival such as the sudden changes in your mood and disposition.

Fertility Charting

These apps provide you the estimated dates for you to get pregnant, also known as your fertility window. They enable you to increase your chances of pregnancy based on the data that they require you to monitor. Some of these apps require you to conduct daily tracking of key data such as your basal body temperature (BBT) and cervical fluid and provide you with an in-depth analysis of your data. Some apps even come with certain tools such as basal body thermometers for a more accurate prediction of your fertility. 

Instruments for Fertility Detection

Aside from the algorithms that calculate your fertility window, some of these apps come with tools for you to have a more accurate prediction. Examples of these tools are built-in vaginal sensors and BBT thermometers. These tools are mostly for a more convenient way of data gathering for fertility charting.

App Options for Each Stage of Fertility

Your menstrual health would be changing as your body develops into maturity. Your goal in using a fertility app would also further change as your body grows. Hence, some brands would come with multiple sets of fertility apps that would cater to a specific stage of your fertility. From enjoying intimacy with your loved one, trying-to-conceive (TTC), pregnancy, post-partum, you would have a handful of options to choose from. 

Relationship Insights

Your sexual health is also an important aspect of your fertility. The topic of your fertility would eventually become a point of discussion when you are intimate with someone on a regular basis. Hence, some fertility apps provide you with the necessary tips and advice on how to deal with love, intimacy, and relationships. 

Personalized Informatics

As fertility tracking apps require you to record your period dates, specific information on your monthly cycles and current fertility status will be tailored according to the data encoded from the prior months. Some of the top fertility apps will also consider other details such as your mood, cramps, and basal body temperature. This would account for a better and accurate prediction of your period and windows for higher chances of getting pregnant. 

Gentle Reminders

Everybody needs a reminder here and there—and these tracking apps come with reminders about your upcoming period, taking your birth control pills, or a missed encoding of your period’s occurrence. This allows you to prepare the necessary feminine apparel on hand or to plan out activities around those dates where you would most likely be in a better mood without dealing with cramps or any premenstrual syndrome (PMS).

Educational Forums

Developers have designed their apps for charting fertility awareness via online forums that are accessible to the users. Some of the best fertility apps even bring in the advice of medical professionals. They allow you to be part of a community that makes you free to ask about menstrual health, intimacy, pregnancy, or practically anything that comes with your fertility.  

Natural Fertility Awareness

Depending on the details being asked by the app, they will in turn provide you with insights and informational articles regarding your current fertility status. Learning about your body and how it functions according to your fertility gives you the power to make more informed decisions and better family planning options for your future. 

Types of fertility apps

Most fertility apps generally provide basic information regarding your fertility status. Because of this, the different types of fertility apps tend to overlap in function and may cause some confusion. Knowing your goal for using fertility apps is essential to know what type of fertility app you would be better off using. Listed below are the three types of fertility apps:

Family Planning Fertility Apps

These types of apps are mainly for ladies who have no plans of getting pregnant and use the app as a birth control option. This type of app bases its predictions under proven Fertility Awareness Methods that determines your ovulation dates. Hence, aside from the general menstruation dates, these apps would require you to input key data such as your BBT and cervical fluid daily for higher accuracy of determining your ovulation dates. 

Pro #1: Cost-Efficient 

You would no longer need to spend on oral contraceptives or prophylactics with these apps. You will be mainly investing in the tools that come with the in-app purchases, so the expenses will be more minimal in the long term compared to allocating monthly budgets for the usual contraceptives. 

Pro #2: Less Waiting Time for Conception 

As you already have a clear idea of when are your ovulating dates, you can immediately start with your efforts to get pregnant as soon as you and your partner desire to do so. However, women who are on the pill may have a temporary delay in conception due to the hormonal adjustment period their bodies would go through. 

Con #1: Imperfect Conjectures 

Inaccurate and insufficient data provided may lead to wrong predictions. A woman's body gets affected by stress, eating, and sleeping habits, etc. This, in turn, may affect your menstrual cycle as well. Hence, relying heavily on the green light of these acclaimed fertility apps (that work when insufficient data has been given) may lead to unintended pregnancies. 

Pregnancy Planning-Only Fertility Apps

These apps’ goal is to help women conceive, which overlaps with a lot of functions with the third type of fertility app. The uniqueness of this type, however, involves specific details that cater largely to a woman preparing for pregnancy. This includes reminders for prenatal health, pinpointing of days for intimacy, logs for nutritional journals, community forums addressing pregnancy planning concerns, etc. 

Pro #1: Caters to Different Stages of Your Fertility 

Brands that fall under this type of fertility app have specific apps to be downloaded for different stages of your fertility. Each app has different key features designed to cater to you when you wish to get pregnant—from your pregnancy stage up to taking care of your baby in his/her early years. 

Pro #2: Accessible Information to Partners 

As getting pregnant is not a one-person thing, this type of fertility app allows you to share your fertility status and information to your partner for the both of you to monitor and increase your chances of conception. The app informs your partner of the development of your baby when you get successfully pregnant.

Con #1: Unclear Method Used for Predictions 

Most of these apps that claim to help in getting their users pregnant may or may not use scientifically proven algorithms for their predictions. Nonetheless, trying-to-conceive stories are different from woman to woman and conception does not always take place without a lack of trying. 

Period Tracking-Only Fertility Apps

This type mainly serves as some form of a period journal and for understanding when to predict the monthly visitor. The collated data on this app can also be used as a reference during doctor’s visits. This medical information is asked during the suspicions of pregnancy, infertility, or even for treatment of irregularities in menstrual cycles.

Pro #1: Ease of Scheduling 

Planning to go on a trip? Being able to predict when your next period will arrive allows you to schedule your plans to better dates, or at least be prepared to deal with it when it arrives. 

Pro #2: Considers Long Menstrual Cycles 

Some of the period tracking-only apps have features to identify irregularities in your cycle. They may provide additional information to cater to those with suspected Polycystic Ovary Syndrome (PCOS), a hormonal disorder common among women who have infrequent or prolonged menstrual periods.

Con #1: Unreliable Ovulation Predictions 

Although the information encoded is essentially the same—which are normally just the dates of menstruation—these data alone are lacking for higher accuracy in the estimates of your fertility windows. 

Who needs fertility apps?

Your body goes through a lot of changes as you grow and mature. Understanding about these changes with the fertility stage you are in is extremely helpful to remind yourself that it’s okay to be hormonal every once in a while (or more like every once in a month). Below is a summarized category of people you may find yourself belonging to that needs fertility apps:


Having a period for the first time signals your entrance to womanhood. This is also the start of your fertility and reproductive health story. As your body is going through puberty, there would be a lot of rapid and subtle changes occurring in and out of your body. Your height and weight, fitness lifestyle, liquid intake, sleep schedules all play a role in affecting your menstrual cycle. Monitor them easily with fertility apps. Feel free to raise a question, open up your feelings, or just gain more knowledge about menstrual health from fertility apps.  

Natural Family Planners

Natural fertility apps are a definite way to go as a form of birth control and avoiding pregnancies if you are averse to the side effects of using contraception. There are fertility apps that are based on the proven and tested methods of natural family planning. Using fertility tracker apps makes the Fertility Awareness Method (FAM) more convenient and effective when trained properly in the different methods it offers.

Couples Who Wish to Conceive

Are you and your partner struggling to get pregnant? Fertility tracking apps have built-in algorithms to calculate the window for ovulation. This enables you and your partner to find time to plan intimate date nights on the days where the app indicates a high chance of getting pregnant. 

To-be Mothers

Fertility apps not only track and help you to understand the changes happening on your body when you finally get pregnant but it also closely monitors the growth of your little one inside your womb. Questions are easier to answer, relevant information right at your fingertips, and access to a community of soon-to-be-moms are doable in these apps.

Menopausal Women

Also known as the perimenopause stage, the length of this stage may differ from woman to woman, and can last for a few months or carry on up to 10 years. This stage comes with symptoms such as irregular periods, lower sex drives, and mood swings. Continuously keeping track of your menstrual cycles until this stage helps you to monitor the changes in your body and allow you (and maybe even your partner) to plan if you want to have more pregnancies that lead to inevitable menopause. 

Step-by-step guide in choosing a fertility app

Step1: Identify your goal.

Is your goal to become pregnant? To try natural means of birth control? Different goals lead you to different types of fertility apps on the market—each with specific claims that would cater to the distinct groups of people that need fertility apps.  Once you identify your goal, you would be able to narrow down your choices from hundreds of available good fertility apps. 

Step 2: Choose your preferred details to track down. 

The most essential detail to track down on fertility apps is your period dates. However, these apps would sometimes ask you to record other details such as your daily fluid intake, your exercise regime, and even mood for the day, amongst others. This is to consider other factors that could affect your menstrual period. However, keeping track of too many points may lead you to be overwhelmed; you might end up with inaccurate monthly cycle predictions. Know the points that you can commit to tracking and try to develop a habit of recording them before you forget. The top-rated fertility apps can provide you with fairly accurate predictions of your next period even with the most basic information such as your period dates.  

Step 3: Opt to go for user-friendliness.

As the choices are varied and numerous, go with the app that you are most comfortable handling. Most of the best fertility tracker apps possess aesthetically pleasing features or a boatload of information regarding your fertility. But if you find it difficult to navigate or overwhelming, it is not a crime to switch fertility apps that have friendly user interfaces.

Step 4: Consider other factors. 

Some women have longer menstrual cycles or worry about the irregularities in their period without the use of birth control pills. If you belong to either group, you may need to go for the brands that claim as the ‘best apps to track fertility with 60-day cycles’, or for those that are labeled as ‘PCOS fertility apps’.

Step 5: Read disclaimers and possible in-app purchases.

Fertility tracking apps and privacy concerns have been raised by some users due to the brand’s access to their menstrual information. These statistics provide a large market for ‘femtech’ advertisements in fertility apps. Be wary of overpromises, disclaimers, and the curated feminine apparel that comes with the app you choose. Some of the top free fertility apps still come with in-app purchases.

Step 6: Updates are advised from time to time.

Updating your profile (i.e. height and weight) every now and then are recommended. Factors such as your daily lifestyle choices like sleeping habits, diet plans, exercise regimens, and puberty affect your height and weight. This, in turn, influences your menstrual health in some aspects as well. Therefore, logging these physical changes in your fertility app helps to adjust its predictions accordingly based on its built-in algorithm.

Frequently Asked Questions (FAQs)

The most basic function of fertility apps is to track your monthly period and to give you an estimate of your monthly cycles in the succeeding months. As long as the fertility app can do this primary purpose, yes it does work. Other additional features of fertility apps are all subject to the brand’s claims and user’s discretion.  

Fertility tracking apps tend to be referred to as ‘glorified calendar apps’. You merely record in the app’s calendar the first and last day of your period and then the app would use its built-in algorithm to calculate your next period. Putting your records consistently as the months go by allows the app to have a clearer idea of the length of your menstrual cycle. Calculating the fertility window would be estimated based on the middle of your menstrual cycle. Other apps use additional details to determine the day of your fertility by including them in the app’s algorithm and calculations. 

Despite the number of fertility apps on the market, only a handful of them use Evidence-Based Fertility Awareness-Based Methods (FABM). These methods have effects similar to other customary forms of birth control with ideal use. The facts rating of fertility apps based on a study evaluating 98 apps states that at least 1 app in each FABM category had a perfect score on accuracy. However, without proper training in the method, relying on these apps that use FABM may be insufficient to prevent pregnancy. 

A study has shown that only 9% of the top 33 free apps have accurately predicted the fertile window, or did not mistakenly classify the fertile days as infertile. Pinpointing the exact day when a woman is fertile (also known as ovulating) is difficult, even with the use of an ovulation prediction kit. There are external factors that can be measured, such as basal body temperature, the thickness of cervical mucus, etc. However, other factors such as stress, intense physical activity, alcohol consumption, and hormonal irregularities, amongst others, may also play a role in affecting the day of ovulation. 

A study conducted on 108 free fertility apps found only 20% to be accurate in determining the day of ovulation. However, it is important to note that fertility apps—as a general rule—tend to only indicate your chances of getting pregnant in the fertility calendar, whether it is high or low.

Fertility calendar apps can only be as accurate as any Fertility Awareness methods, which when used with training and carefully followed instructions, can be 76-88% effective.  

You are most fertile just before or on the day of ovulation. Your ovaries release an egg to the fallopian tube and stay there for about 12-24 hours and this is the time where you are most likely to get pregnant. As a general rule of thumb, experts say that ovulation occurs in the middle of your menstrual cycle. So if your cycle lasts for 28 days, your day of ovulation would happen about 14 days before the start of your next period. 

Infertility is defined as the incapability to get pregnant for at least a year (if you are younger than 35, 6 months if otherwise) of frequent unprotected intercourse. Getting pregnant needs both a male and female participant, and infertility may come from male or female factors about one-third of the time. Other times, the cause of infertility cannot be defined. Fertility tracking apps only keep track of your menstrual cycle and possible windows of fertility. Irregular menstrual cycles may be a cause of infertility. However, since regular menstrual cycles also do not guarantee that you are ovulating, it is best for you and your partner to consult with a medical professional should you have suspicions of infertility. 

PCOS is a hormonal disorder where your ovaries develop many small collections of fluid (follicles) and fail to release eggs. It is also considered to be one of the most prevalent causes of infertility. The signs of PCOS are usually infrequent, irregular, or prolonged menstrual cycles. Some fertility tracking apps calculate your risk of PCOS based on the irregularities in your cycle. Nonetheless, there are available fertility tracking apps that are capable of predicting your period and fertile windows no matter how irregular you are. 

The Food and Drug Administration (FDA) is an agency responsible for evaluating the safety and efficacy of certain food and products in the USA. ‘FDA approved’ in essence means that the helpfulness of the product is more significant than the risks it poses upon usage. Hence, this label is often used for Family Planning Fertility Apps, as they are said to have better chances of being used as birth control despite the risk it poses to unintended pregnancies. 

These terminologies are often used interchangeably but there are subtle differences and overlapping of definitions. Below are the specific meanings of these terms:

Fertility Awareness Methods (FAM) is a large blanket of methods that recognizes when you are fertile and you prevent pregnancy by avoiding sexual intercourse or using a barrier method during the fertile days, or promote pregnancy by being intimate on your fertile days every other day, or much better every day.

FABM is a specific language to refer to the different categories of methods that are used based on evidence and training. It has 5 different categories: Standard Days Method, Cervical Mucous Method, Basal Body Temperature (BBT) Method, and Sympto Thermal method.

Natural Family Planning (NFP) is an older term for FAM or FABM, which requires abstinence as a method for preventing pregnancy in your fertile days. Although most of the FABM methods are considered NFP methods, abstinence is not essential for all FABM.

Rhythm Method, or specifically known as Calendar Rhythm Method, merely keeps track of the days of your menstrual cycle in a calendar for at least 6 months. You then calculate for your fertile window based on your shortest and longest recorded cycle. You would then update these calculations each month by using the 6 most latest cycles.