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Amazon shuts down secret project to develop fertility tracker

The project, codenamed "Encore," was part of Amazon's moonshot incubator Grand Challenge, which launched under founder Jeff Bezos.

The company had been working to launch a fertility monitoring device and companion smartphone app for the past four years as part of a project codenamed "Encore," said the people, who asked not to be named because they weren't authorized to speak to the press. The wave of frugality marks a distinct departure from the approach taken by Amazon founder Jeff Bezos, Jassy's predecessor, who was known for greenlighting experimental projects and giving employees extended runway to develop them, even if they burned cash along the way. It was a costly endeavor and required significant upfront investments for lab research and development, in addition to the high salaries for scientists and engineers, the sources said, adding that the team's weekly overhead was roughly $1.5 million.

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