Natural Cycles launches wristband to replace thermometers for its FDA-cleared birth control app

Source: The Verge

Overview

Natural Cycles, the company behind a controversial FDA‑cleared birth control app, is replacing its thermometer with a wristband that measures skin temperature, heart rate, and movement during sleep. The newly‑launched wristband costs $129.99 and syncs with the Natural Cycles app, which uses an algorithm to predict fertile windows based on the collected data.