Friend Quizzes, Tab Apps, Skype, Calendar, Are You Interested? and More on This Week’s Top 20 Growing Facebook Apps by MAU

Page tab applications and friend quizzes dominated our list of the fastest growing apps by monthly active users this week. Elsewhere on the list was a dating app, Skype’s app and a pair of Phrases apps, still not available in the United States. The titles on our list gained the most MAU of any apps on the platform, growing from between 708,300 and 12 million MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Note, as well, that all apps show a five-day reporting lag due to a bug last week. However, no data is missing and everything is back to normal now.

Top Gainers This Week

1. The Sims Social19,424,240+12,099,401+165%
2. Welcome Tab6,449,391+3,300,395+105%
3.  21 questions26,711,856+3,266,379+14%
4. The Smurfs & Co7,517,562+2,338,137+45%
5.  Bold Text2,288,224+2,204,668+2,639%
6.  MyCalendar16,160,338+2,199,227+16%
7.  Static HTML: iframe tabs49,582,761+1,831,436+4%
8.  Are YOU Interested?14,565,125+1,759,158+14%
9.  iwipa: HTML + iframe + FBML15,031,963+1,171,774+8%
10.  Texas HoldEm Poker 36,417,590+1,106,421+3%
11.  Truth Game10,434,391+1,060,709+11%
12.  Between You and Me8,526,711+998,701+13%
13.  Skype6,932,946+974,672+16%
14. Magic Land1,505,587+934,145+163%
15. Phrases (new)1,010,809+854,886+548%
16.  Truths About You7,717,122+817,576+12%
17.  GnomeTown2,597,911+751,096+41%
18.  Phrases15,623,439+749,519+5%
19.  Friend Report Card1,066,243+721,490+209%
20.  PM Custom Welcome Tab3,566,841+708,265+25%

When it came to Page tab apps; Welcome Tab grew by 3.3 million MAU, Static HTML: iframe tabs grew by 1.8 million MAU, iwipa: HTML + iframe + FBML by 1.1 million MAU and PM Custom Welcome Tab by 708,300 MAU.

Then there were friend quiz apps. 21 questions grew by 3.2 million MAU, Truth Game by over 1 million MAU, Between You and Me by 998,700 MAU and Truths About You by 817,600 MAU. These apps ask you questions about your friends, then publish feed stories when you answer. Friend Report Card grew by 721,500 MAU and is an app that allows users to publish a report card of their friends (based on Likes and comments) to the stream, tagging them in the process.

The rest of the list included Bold Text, with 2.2 million MAU, an app that publishes a blessing to a user’s profile. MyCalendar with 2.2 million MAU; the app asks users to invite friends to use the app. Are YOU Interested? with 1.7 million MAU. Skype had 974,700 MAU, with half the growth in the US.

Then apps not growing in the US included Phrases (new) with 854,900 MAU and Phrases with 749,500 MAU.

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.