And on the sixth day, there were more than 5 million downloads of Instagram for Android.
That's right, in just six days, the free photo-sharing app has registered 5 million to 10 million downloads on the Google Play site. The same milestone took about six months for the iPhone app to reach.
Of course, the Instagram community had been nascent in the early days of the iPhone app, whereas now it is established and robust.
So robust that Facebook had to snap it up for $1 billion.
Facebook founder and Chief Executive Mark Zuckerberg wrote about the deal: “It’s the first time we’ve ever acquired a product and company with so many users. We don’t plan on doing many more of these, if any at all. But providing the best photo sharing experience is one reason why so many people love Facebook and we knew it would be worth bringing these two companies together.”