Originally launched in October 2010 as an iPhone exclusive, Instagram quickly became a runaway success. The photo sharing app was a personal favorite of Apple's Phil Schiller and was chosen as Apple's 2011 iPhone app of the year. Rather quickly, the app amassed millions of users and was held up by Apple enthusiasts as an example of why the iOS ecosystem was superior to Android's.
Instagram's iOS exclusivity, however, wasn't destined to last. After 17 months as an iOS-only application, the Instagram team finally released Instagram for Android on April 3, 2012.
One year later, close to half of Instagram's now 100 million+ users are on Android.
In a blog post
