YStory is a Tokyo-based digital health company focused on women’s health. Its JoyHer smartphone app helps women manage menopause through symptom tracking, personalized self-care plans, expert-reviewed content, AI chat and an anonymous community. JoyHer Enterprise adds seminars and anonymized reporting for employers and health insurance societies; the corporate service is sold as a monthly subscription priced by eligible employee count.
YStory develops its programs through research with Kyoto University. A six-month study of JoyHer Pro involving 91 women with menopausal symptoms reported high continued use and improved symptom scores, with results published in DIGITAL HEALTH in 2026.
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