Most popular free iPhone apps

POSTED: 10:24 PM Jun 24 2012   UPDATED: 12:41 PM Aug 15 2012

Social-bookmarking service Pinterest launched its popular free iPhone app last year and recently announced that it is now being offered to Android devices and iPads. Here's a look at the most popular free iPhone apps of all time based on number of downloads.

Pinterest iPad app screenshot
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Social-bookmarking service Pinterest recently released new Android and iPad apps. Since it launched last year, Pinterest has only been available on the Web and through its popular iPhone app.