Microsoft is quietly testing a new launcher app that replaces Android users’ home screens. Called Arrow, the utility is a product of the company’s Garage program that lets employees work on interesting side projects and release them to the world.

Right now, the app is in private beta, and only available to members of a private Google+ community. Microsoft isn’t saying much about its existence, either. While a spokesman for the company confirmed that the app is a Microsoft Garage project, he declined to share specific details. Microsoft News, a blog unaffiliated with the company, managed to get its hands on a copy of the app and published a run-down of how it works right now.

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