Ovum

Women’s health is fragmented, poorly understood, and often reduced to cycle tracking by most existing tools. The challenge was to create something clinically aware yet emotionally intelligent — useful for everyday self-management but also powerful enough to support real-world research. Nakatomi had to design for a highly diverse, hormonally dynamic user base, while rethinking the structure of traditional (and male-oriented) health apps from the ground up. The result had to feel empathetic, private, and intuitive for the complex needs of all women.

Ovum was designed in close consultation with patients and medical professionals, including our founder, Dr. Ariella Heffernan-Marks. The app is shaped entirely by how women actually live with, and talk about, their health. Its custom overview adapts in real time to symptoms, goals, and life stages, while allowing users to look back through their history. The interface uses conversational AI for check-ins, surfacing insights based on past logs. A key breakthrough was structuring data around six core health factors, enabling documents, health history, and chat to work together seamlessly to deliver personalised insights and spot patterns unique to each user.

Ovum is already sparking a powerful shift in the women’s healthcare space — featured in Forbes, The Australian, and more — we’re helping women recognise and fix the the gender health gap. Even before launch, it’s rallied a cross-disciplinary advisory team of doctors and researchers, signalling deep industry alignment. During its pilot, Ovum earned an NPS of 62, reflecting early trust and real-world value. But this is bigger than an app. It’s the start of a movement. One designed to close the gender health gap through better data, stronger advocacy, and research that finally reflects women’s lived experiences.