生理管理アプリ 4MOON - 生理周期の予測や更年期に

4MOON is a free, feature-rich period management app that brings menstrual tracking, fertility and pregnancy forecasting, menopause support, and other health data into one calendar. It supports period and ovulation predictions, basal body temperature graphs, mood and symptom logs, diet and weight tracking, and easy sharing with partners via email or LINE.

Designed for lifelong health management, it syncs with Apple Health and Google Calendar, offers push notifications, a diary, and online medical consultations. With an emphasis on privacy and practical tools, 4MOON helps users monitor health from menstruation through menopause and beyond.