Pinterest launched its first-ever apps for Android and the iPad today, just days after dropping its invite-only policy and opening its doors to the public. Pinterest also announced plans to launch an app for the Kindle Fire, which should be available on the Amazon Appstore "later this week."

The apps were announced at an event at Pinterest headquarters Tuesday night, where co-founders Ben Silbermann and Evan Sharp stressed the importance of expanding their network into the mobile space. The company had already made inroads with the launch of an iPhone app last year, though today's announcement marks a major expansion into tablets and Android-based devices. "Our goal has never been to get you in front of the computer transfixed for hours and hours on end," Silbermann explained. "It's to get you offline."

Version 2.0 of the Pinterest iOS app brings performance and stability improvements to the iPhone, along with a new two-column layout. The iPad version, meanwhile, includes an embedded, Pinterest-centric web browser, as well as a shortcut that allows users to view any other items that have been pinned from a given page. Both Android and iOS apps offer essentially the same functionality, enabling users to pin and re-pin content, browse categories, and follow other users from their mobile devices.

Pinterest for iOS and Android is available for free on iTunes and Google Play, respectively.