Sun4Health is a Class 1 CE-certified medical smartphone application developed by siHealth, a health-tech company based at Harwell Science Campus, Oxford. The app helps users optimise safe sun exposure — balancing UV protection against vitamin D synthesis — through real-time monitoring, personalised recommendations, and clinical-grade exposure tracking. As part of the product design team, I contributed to the UX/UI development and visual identity of the application — working across brand, colour system, and interface design from early-stage concept through to production-ready screens. The product has since been validated in a clinical field study involving 150+ volunteers in partnership with King's College London.

Image courtesy of siHealth Ltd.