Natural Cycles wants to create wearable birth control

Natural Cycles, the first “digital birth control” to get sign-off from the Food and Drug Administration, is back. This time, it’s asking the agency to authorize integration with wearable devices like the Oura Ring. The feature could make it easier for users to use the app properly, but it doesn’t sidestep some of the existing issues with app-based birth control.

The Natural Cycles app uses daily temperature measurements and period cycle tracking to predict the days someone is least likely to get pregnant. It falls under the broad category of fertility awareness birth control methods, where people track when they’d be ovulating and use that information to figure out when they’d have the best chance of conceiving. It tends to be conflated...

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