The incredibly popular mobile photo sharing service has hit 80M users, making 30M user increase, less than in three months after announcing its acquisition by Facebook.

According to a post on Instagram blog community has grown to over 80 million registered users who have shared nearly 4 billion photos. That’s still a far cry from Facebook’s 300 million photos uploaded every day. but it’s certainly huge if you remember Instagram is mobile-only, however Facebook is planning to port Instagram on the web.

At the time of acquisition, Facebook announced that Instagram had some 50M users. This means the app has managed to increase its user base by more than 10 million users on average per month.

This is how Instagram has grown since October of 2010, according to Quora:

Oct 13 2010: 100,000
Oct 20 2010: 200,000
Oct 28 2010: 300,000
Dec 21 2010: 1 million
Feb 01 2011: 1.75 million
Feb 15 2011: 2 million
May 03 2011: 3.6 million
May 26 2011: 4.4 million
Oct 31 2011: 12 million
Dec 5 2011: 14 million
Jan 24 2012: 15 million
Mar 11 2012: 27 million
May 1 2012: 50 million

Source – Instagram