However, there is something new. Temperature monitoring, which Apple claims will be able to track when women are ovulating. Apple’s Diedre Caldbeck says: It’s swim-resistant, crack-resistant and takes our commitment to women’s health even further. Menstrual cycles are key to women’s health… we added cycle tracking three years ago and it’s helped tens of millions gain knowledge about their cycles and overall health. We build our health attributes with two key elements. First they are developed with scientifically validated knowledge. Second, privacy is core to keeping your data private. In the health app you’ll be able to see night shifts from your core temperature that can be caused by things like alcohol, jet lag or illness. But temperature tracking is useful for those tracking their cycles. The biphasic shift is a bodily response to changing hormones and may indicate ovulation.