七麦数据

Discover your body’s rhythm with a scientifically based fertility tracker designed to help you plan or avoid pregnancy naturally.
Simply enter the first day of your last period, and the app predicts your next period, ovulation day, and the most fertile and least fertile days of your cycle.
With Apple Health sync, your data stays automatically updated across all your Apple devices — so your fertility insights are always with you.

* Scientifically Backed Methods *

Our app includes two baby gender prediction methods:
• Popular Method – a theoretical approach based on the well-known theory by Landrum Shettles, which suggests that the timing within the fertile window may influence the baby’s gender.
• Scientific Method – a statistical, research-based approach developed by Rodrigo Guerrero, grounded in large-scale data from thousands of women.

You can switch between them anytime in Settings.
Please note: both methods provide probabilistic insights, not guaranteed results.

* Full Version Features *

Unlock deeper insights with the full version:
• Daily pregnancy probability for any selected date.
• Gender prediction probabilities for each fertile day.
• Overall fertility chances during your current cycle.
• Automatic Apple Health sync between devices.

* How It Works *

To create your personal fertility calendar, simply provide:
• The first day of your last period.
• Your average cycle length.
• Your luteal phase length (default works for most users).

Ideal for women with regular cycles — but also reliable for estimating ovulation using your average cycle length.

* Empower Your Reproductive Journey *

Whether you’re trying to conceive or prefer natural birth control, this app provides clarity, accuracy, and peace of mind — backed by science and made even smarter with Apple Health integration.

Disclaimer: This app is intended for informational and educational purposes only. It should not replace professional medical advice or consultation with a qualified healthcare provider. Accuracy may vary depending on individual factors and data input.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

This is the full version of the application. You will be able to see the following data:

- The probability of getting pregnant on the current or on any selected day.
- The probability of conceiving a girl or a boy using the selected gender prediction method.
- Chances of getting pregnant during the current period.
- Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.

The application is based on the scientific research. It helps to determine the fertile days of the month, so you can either achieve or avoid pregnancy. The application uses the date of the last period and shows the date of the next period, the best days to conceive a baby, the ovulation day and when you can avoid pregnancy.

* Scientific Research *

The popular baby gender prediction method is used by default. But it’s based only on the widely-spread theory by Landrum Shettles. The application also supports the scientific baby gender prediction method. It’s based on the scientific research by Rodrigo Guerrero and the statistics of thousands of women.

You can change the gender prediction method on the “Settings” screen. But remember that either gender prediction method shows only slightly higher chances of conceiving a girl or a boy and it never guarantees the result.

* Full Version *

For the minimal price you will be able to see the following data with the full version of the application:

The probability of getting pregnant on the current or on any selected day.
The probability of conceiving a girl or a boy using the selected gender prediction method.
Chances of getting pregnant during the current period.
Chances of conceiving a girl or a boy during the current period.

* How to Use *

To generate the menstrual calendar you have to provide the following data:

- The first day of the last cycle (select the day and use the button “Add”).
- Average length of the menstrual cycle (adjust it on the “Settings” screen).
- Length of the luteal phase (most women can use the default value).

The application works best for women with regular menstrual cycle. But average cycle length is also a good way to predict when the ovulation should happen.