Amazin’ Giftbox Sees 20% DAILY User Growth

Facebook viral application growth continues to astound me. Amazin’ Giftbox, which Gil and released about two and a half weeks ago, has been seeing consistent total userbase growth between 15-20%, DAILY.

And it’s on autopilot right now–we’re doing nothing to make it grow. Wow.

A few things worth noting: (1) Fridays, Saturdays, and Sundays seem to be “slow” days on Facebook. (See top chart.) (2) # of app installs per hour still correlates well to daytime hours in North America. (3) To increase the total userbase by 15% everyday, the raw number of people who add the application each day has to be dramatically greater than the day before. From the top chart here, you can see that’s exactly what’s happening (minus the slow weekend.)

FWIW, among apps with between 10k and 100k users, Amazin’ Giftbox is the 5th most viral app on facebook right now, according to Appsaholic. (It’s tied at 20% daily growth with the 4th place “Harry Potter Magic Spells”)