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F-Droid just learned a vital trick from the Play Store
(www.androidpolice.com)
F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
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Google implemented that API so of course their store had it first. It also runs as a privileged system app though. (On GrapheneOS it doesnt need to)