Record and predict your period/menarche with the period management app Sofi Girl!
Your first period management app should be from Sofi*, the No. 1 selling sanitary product for 10 consecutive years! Sofi Girl, the period management app, not only predicts your period, but is also made by a sanitary product brand, so you can use it with confidence.

[The period management app Sofi Girl is recommended for the following people]
- First-time users of a period management app
- Looking for a simple and easy-to-use period management app
- Want to track your menstrual cycle and schedule with a period calendar and manage your health
- Regular users of Sofi feminine hygiene products
- Want to accurately record and understand your period with a period management app
- Want to record and manage your period with a period management app while enjoying a more comfortable private life
- Parents who want to share their child's period with a period management app and predict and manage their period together
- Want to customize and use a period management app
- Want to use a period management app to plan a schedule while keeping track of your period
- Want to record outings and event schedules along with your period cycle
- Looking for a health management app for junior high/high school students
- Want to manage your schedule with a cute calendar

＼Make period and menarche predictions even easier with the period management app!／

Spend your non-menstrual days with the period management app Sofi Girl! Easily register with a tap, and see your period predictions and cycle at a glance. This is a convenient, free menstrual management app.

[Features of the Sofi Girl Period Management App]
- Easily record your period with just a tap!
Registering your period, which can often be a hassle, is now a breeze. Once you register your period, you can predict your expected period date up to three months in advance. You can also learn about your body's rhythms, including your physical and mental state. You can also receive period predictions via push notifications. You can view past records even after more than a year.

- Exclusive four-panel comic strips exclusively for the Sofi Girl period management app
Sofie's original four-panel comic strips are currently being serialized! Learn about menstruation and sanitary products in a fun way through common menstrual stories and anecdotes.

- Customize your screen and create your own favorites!
Choose your own background theme, color, and profile icon. Combine them to create over 500 designs! Add your own photos to create a unique home screen.

- Manage your schedule with the period management app's calendar function.
You can even register important exams, club activities, and school events on the calendar from the app. You can see when your outings and predicted period dates overlap in advance, so you can be sure to have pads, tampons, and other menstrual products ready when your period arrives!

・Easy to use, with no ads from other companies
This app is easy to use, with only period information and no ads from other companies, so families can rest assured. Experts and doctors provide explanations on menstrual concerns that women may struggle to understand or ask others about.

・Connect the app to check the sharer's period date
When parents and children share their information, the app allows them to check their child's next expected period date, past health records, and yearly trends, making it easier for parents to provide support.

・"Period Preparation Mode" is available for those who haven't yet had their period.
Sofi Girl also supports you before your child's first period. It predicts the expected time of menarche, so you can prepare with peace of mind. Sofi's original videos and comics clearly explain everything you need to know before your period arrives.

- Four Menstrual Cycles and Period Prediction
Easily understand your menstrual cycle with color-coded circles for the follicular, ovulation, luteal, menstrual, and female hormone phases. Based on your recorded period start date and cycle, predict your next period start date. This convenient feature allows you to refer to your basal body temperature without having to take your basal body temperature.

- Period Management
You can track your menstrual flow (heavy/light), menstrual pain level, and whether or not you've taken medication, allowing you to check your menstrual history. Daily trends, such as the first day of your period and the second day of your period, are visible, making it easier to identify cramps and heavy periods as you record your period.

In addition, recording your period will make it easier to report your physical condition to your doctor or gynecologist based on the information in the app. The period review screen allows you to see your menstrual cycle and period trends.

- Health Tracking
Outside of your period, you can track your mood, physical condition, and whether or not you have vaginal discharge. By recording symptoms like irritability and anxiety before your period, skin irritation, and breast swelling, you can better understand your condition and take preventative measures. Mood and symptom icons are based on survey results and identify concerns that teenage girls are particularly susceptible to. Recorded health data is displayed as a yearly trend, so by continuing to record, you can understand your own physical rhythm.

Health Advice
Based on the rhythm of female hormones, which are deeply connected to a girl's health, today's health advice is displayed. You can also check your "physical condition" and "mental condition" at a glance. We'll help you feel comfortable during your period.

Mental Product Selection Advice
Recommended menstrual and feminine products are recommended based on your body rhythm and daily plans. A wide selection of menstrual products, including those tailored to your period and convenient panty liners for off-period use, are displayed at the optimal time.

Recommended Item Diagnostics
The "My Sofy Diagnostics" feature suggests products tailored to your lifestyle. We address the issue of not knowing which menstrual products are right for you and support you in living a more comfortable life.

・Favorite Product Registration
You can register products suggested in the "Menstrual Product Selection Advice" and "Recommended Item Diagnostic" features to your own "Favorites List." By sharing the list with your child, parents can view their child's favorite list, making it easier for parents to support their child in preparing their menstrual products.

・Period Calendar to Track Your Menstrual Cycle
Cute stamps make scheduling easy! Easily manage trips and important events with the calendar. The calendar displays past period records and the predicted date of your next period, so you can adjust your schedule to fit your period. Period predictions are displayed up to three months in advance.

・Menstrual Care & Advice
We provide advice and information supervised by experts and doctors, tailored to your age and menstrual experience. It helps you solve period-related concerns you may not understand or feel comfortable asking others about.

It also works with Sofy First Body Navi (website: https://jp.sofygirls.com/ja/home.html).

・Sofy Girls Lab Challenge
Level up by recording your period and physical condition and using the app. You'll receive new background themes, colors, and profile icons as rewards, so you can keep recording while having fun.

・Period Prediction Notifications
The Sofi Girl app has a feature that notifies you when your expected period is approaching. You can set the notification timing to one, two, three, or seven days before your predicted period. If your predicted period has passed, you can set it to one, two, three, or seven days after your expected period. To adjust this, go to "Push Notifications" in the "Customize Settings" section.

・Menarche Prediction (Period Preparation Mode Only)
This original feature, exclusive to the Sofi Girl app, predicts your first period. By recording your growth, such as height and weight, you can determine when your first period will arrive. Let's learn about menstruation together with Sofi Girl until your period arrives.

With the Sofi Girl app, you can install it on each device and share it with others to record and manage your period together. Use it to support girls who are unfamiliar with periods. We limit the exposure of excessive sex and menstruation education information, so even girls unfamiliar with menstruation can use the app with confidence.

Please be sure to read and agree to the Terms of Use.
https://jp.sofygirls.com/ja/app/terms_android.html
Please refer to our Privacy Policy for information on how we handle user information.
https://jp.sofygirls.com/ja/app/privacy.html

If you have any problems or concerns with the app, please contact us via the "App Inquiries" option in the app settings screen or by email at sofy-inquiry@unicharm-app.com. Please note that we may not be able to review your review. Your cooperation is appreciated so we can promptly investigate the issue.

*Intage SRI survey: Cumulative annual sales of napkins, tampons, liners, and underwear markets from June 2015 to May 2017
Intage SRI+ survey: Cumulative annual sales of napkins, tampons, liners, and underwear markets from June 2017 to May 2025