Right here’s the way it works: The watch have to be worn in a single day to measure physique temperature each 5 seconds, based on the corporate. Physique temperature drops barely proper earlier than ovulation and rises throughout it. The watch’s algorithm measures these shifts and might notify an individual a number of days after they might have ovulated.
However Apple’s Well being app, out there on older Apple Watch fashions and iPhones, has already supplied cycle monitoring and fertility predictions, the place customers enter their menstrual cycles and bodily signs. The app may give predictions, not simply retroactive