Menstrual apps are widely used to monitor menstruation and keep track of menstrual characteristics. While potentially useful, they routinely promise more than they can deliver. Most apps imply that they measure ovulation and, most recently, some apps are using compiled data to suggest clinical problems, including endometriosis and polycystic ovary syndrome (PCOS). Our ultimate goal is to provide practical guidelines and tools about how to use health technologies for those seeking to understand reproductive health issues. Specific to this application, we aim to 1) establish relationships with end-users for co-design and 2) use a literature review to examine the extent to which apps have the capacity to offer accurate and suitable medical advice. We strive to ensure equitable and appropriate use of digital technology in the diagnosis and understanding of reproductive health conditions in Aotearoa New Zealand.