While Zipcar finally emerged out of beta to fully-fledged app glory, it was also a milestone-marking week for several top Android Market apps, starting with Pulse. The news reader app for Android tablets has already set standards in design and mobile interfacing, reaching 4 million downloads across Android and iOS this month. Along with $9 million in funding, Pulse is well on its way to be a leader in its sector. Social location-sharing app Glympse has also pulled additional funds, adding another $7.5 million to grow its popular Android app.

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