

"The first platform to measure menstrual blood volume and clot size objectively"
Joii is a femtech company that transforms menstrual health from guesswork into measurable data. Using AI-powered image analysis and specially designed evaluation pads, the platform quantifies menstrual blood volume and clot size with clinical precision, helping users understand what is normal and when to seek medical support. Clinically validated in NHS primary care, Joii has demonstrated a 52% improvement in menstrual health literacy, 33% better symptom screening, and 36% improved patient-clinician communication. The platform supports faster diagnosis of conditions like endometriosis and PCOS through shareable, objective data that bridges the gap between patient experience and clinical care.


7
Team Members
2021
Founded
Digital Health
Sector
Hybrid
Work Environment
A world where menstrual blood is measured as a vital health signal, enabling early detection and better outcomes for women's health conditions.
At Joii, our mission is to bring clinical data and measurable information to menstrual health, transforming how periods are understood, tracked, and discussed by making menstrual blood volume and clot size objectively quantifiable.