Instagram was purchased by Facebook for $1 billion and has now announced that it has seen 5 million Android downloads in six days. By comparison, it took six months to reach 5 million users on iOS when the program was just starting out.

When Instagram opened pre-registration for its Android variant on March 24, it attracted 430,000 sign-ups before launching. Soon after launching on Google Play, Instagram was seeing 2,000 sign-ups a minute.