The trendy photo-sharing app “Instagram” for Android debuted in the Google Play Store nearly two weeks ago and has since increased the service’s user base by 25 percent.

It took Instagram 19 months to reach 30 million iOS users, but it quickly garnered 10 million Android users in less than 10 days.

Gramfeed, a third-party user tracking website, dug into Instagram’s API to determine Mr. Valentino Elbuti (valentinoelbuti) as the 40 millionth user. He recently signed-up and already has four filtered-images posted to his account.

Instagram is now No. 8 in the Top Free Apps section on Google Play, while the iOS flavor holds the No. 1 free app spot in the Apple App Store, despite much media attention on the subject of it selling out to Facebook last week for $1 billion.

“Instagram” for Android is free and features a 4.6-star rating based on 301, 292 reviews on the Google Play Store as of press time.

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