Viddy, Instagram, Pinterest, games, Metacafe, Zoosk, more on this week’s top 20 growing Facebook apps by MAU

Video sharing apps Socialcam and Viddy remained popular on our list of growing Facebook applications by monthly active users this month. Interestingly, Instagram continues to slide down the list after being acquired by Facebook. Websites integrations were also very popular.

Titles on our list gained the most MAU of any apps on the platform, growing from between 570,000 and 19.3 million MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Top Gainers This Week

1.   Socialcam34,200,000+19,300,000+ 130%
2.   Viddy33,800,000+13,200,000+ 64%
3.   Metacafe16,300,000+5,500,000+ 51%
4.   Chill4,500,000+4,460,000+ 11,150%
5.   Zoosk10,200,000+3,400,000+ 50%
6.   Candy Crush Saga5,400,000+1,600,000+ 42%
7.   Daily Horoscope7,700,000+1,500,000+ 24%
8.   Instagram17,000,000+1,500,000+ 10%
9.   9GAG2,900,000+1,300,000+ 81%
10.   Mynet2,300,000+1,300,000+ 130%
11.   Marvel: Avengers Alliance6,900,000+1,200,000+ 21%
12.   Pinterest9,600,000+1,200,000+ 14%
13.   Zynga Game Bar1,600,000+1,100,000+ 220%
14.   Skype12,500,000+1,000,000+ 9%
15.   Mystic Ice Blast1,000,000+950,000+ 1,900%
16.   Photo Love9,900,000+900,000+ 10%
17.   schoolFeed14,400,000+800,000+ 6%
18.   Younews.in6,600,000+800,000+ 14%
19.   Spotify19,800,000+700,000+ 4%
20.   Buggle1,200,000+570,000+ 90%

Socialcam  grew by 19.3 million MAU and Viddy grew by 13.2 million MAU. These two apps grew far more than almost any other app on the list. Viddy began to gain traction especially after the acquisition of Instagram (it’s known as Instagram for video) and Socialcam’s daily video posts and feed stories make the app ubiquitous. While video apps began to displace photo apps, Instagram and Photo Love still made the list. [Editor’s note 5/7/12 4:43 p.m. PT: An earlier draft of this story misidentified Chill as a photo app. It is a video application.]

There were a series of website integrations that proved to be very popular this week: Metacafe’s Timeline app, comedy site 9GAG, and Turkish  integrations Mynet and These apps incorporate different types of sharing, but ultimately result in different feed and Ticker stories.

Candy Crush Saga, Marvel: Avengers Alliance and Zynga Game Bar each grew by more than 1 million MAU. Other popular apps included Zoosk, Skype and Spotify.

All data in this post comes from our traffic tracking service, AppData. Stay tuned for our look at the top weekly gainers by daily active users on Wednesday, and the top emerging apps on Friday.