" But while Boler’s and Tin’s products may give women better information about their bodies, the same can’t be said for all new tech, wearable or otherwise. In the tech world, the implicit assumption that men are the default human remains king. When Apple launched its health-monitoring system with much fanfare in 2014, it boasted a ‘comprehensive’ health tracker. 15 It could track blood pressure; steps taken; blood alcohol level; even molybdenum (nope, me neither) and copper intake. But as many women pointed out at the time, they forgot one crucial detail: a period tracker. 16 "

― Caroline Criado Pérez , Invisible Women: Data Bias in a World Designed for Men