Priya ring

Prima-Temp looking to test its fertility sensor, launches crowdfunding campaign

Formerly known as BLOOM and now called Priya, the device continuously monitor body temperature, which is one of the most reliable indicators of female fertility.
BLOOM core body temperature fertility sensor

BLOOM core body temperature fertility sensor unveiled at CES

The ring-shaped device is made to be self-inserted into the vagina from where core body temperature measurements are sent wirelessly to a paired smartphone.