Joii, a trailblazing Irish femtech startup which has raised €2.4m in funding to date, has today launched its groundbreaking app and innovative range of sustainable period care products, aiming to transform the way menstrual health is understood, monitored, and discussed in Ireland and beyond.
A world-first, Joii’s menstrual pad and mobile app measure period blood volume and clot sizes, offering users unprecedented insights into menstrual health through AI-powered image analysis. Backed by clinical research and real-world validation, Joii offers a data-driven way to monitor menstrual health, finally giving people with periods the tools to see what’s really going on.
While wearables track steps, sleep, and heart rate, Joii is pioneering a long-overdue frontier in female health, providing data-driven insights into the menstrual cycle and female health. By combining specially designed evaluation pads with a mobile app, users can scan used pads to receive a quantified evaluation of their period flow and clotting patterns. These data points are clinically relevant but often overlooked.
“For too long, women have been told to just ‘track their period’ without any real tools to measure what’s actually happening. With Joii, we’re changing that,” said Joii Founder, Justyna Strzeszynska. “We’re helping people see their periods clearly, for the first time.”
Joii is focused on setting a new standard for menstrual health and, by extension, women’s health issues in general. Heavy menstrual bleeding affects 1 in 3 women, yet diagnosis and treatment are frequently delayed due to vague language like “heavy” or “normal”, without any tangible or qualifying details. Joii introduces objective data to the conversation, empowering users with measurable, visual, and shareable insights that can accelerate diagnosis and care.
Joii’s technology is Class I Medical Device–Certified in the UK and protected under multiple patents. The company is now partnering with leading institutions to develop predictive models for menstrual conditions, such as endometriosis and polycystic ovary syndrome (PCOS), transforming menstrual blood into a powerful diagnostic tool.
Supported by clinical research and validated through real-world studies funded by the NIHR (National Institute for Health and Care Research), Joii products show remarkable results. 62% of users reported improved communication with their healthcare professionals, symptom screening efficacy increased by 288%, and menstrual health literacy rose by 134%, demonstrating the app’s positive impact on menstrual health awareness and management.*
This technology is particularly beneficial for individuals experiencing heavy bleeding, those on long diagnostic journeys, such as endometriosis, which currently can take up to 10 years, as well as those seeking a better understanding and control over their menstrual health. Joii empowers users to advocate for themselves and also provides healthcare professionals with objective data that can improve diagnosis and treatment.
What the Experts Say:
Dr Fatema Mustansir Dawoodbhoy (NHS), Clinical Advisor to Joii, said, “This app will definitely offer me better insights into how the patient is feeling as I will be able to understand their symptoms variation throughout the month.” Meanwhile, Dr Kushal Chummun, Consultant in Obstetrics and Gynaecology in the Rotunda and Connolly Hospital, agrees – “I think the app is really, really good”, underpinning the clinical confidence in Joii’s innovation.
How It Works:
-
Wear Joii Pads – Designed for optimal visibility and comfort.
-
Scan with the Joii App – Use the Joii App to analyse the pad.
-
Get Insights – Instantly receive volume in millilitres, clot detection, and cycle trends.
Joii’s AI-enabled app is free to download on iOS and Android devices, and Joii Evaluation Pads RRP €6.95 are available now from selected health stores and pharmacies nationwide as well as online from www.joiicare.com.
“Wholefoods is proud to support Joii Care and their groundbreaking approach to menstrual health,” said Ronan O’Flynn, Sales Manager at Wholefoods Wholesale Ireland. “By combining smart technology with a clinically tested menstrual pad, Joii empowers users to measure their period volume and better understand their symptoms – a world-first solution that supports more informed self-care and stronger communication between patients and clinicians.”