Dec 02, 2011 - Keitai is proud to introduce Advent Calendar 2011 for iOS devices. Our new app is dedicated to Advent 2011. A fun calendar with a countdown to Christmas. 24-day waiting period marked by 24 virtual windows, behind which hide 24 fun drawings to be coloured. Have fun and Merry Christmas! Animated by a Christmas music in the background, the Advent Calendar will accompany adults children and families to Christmas helping to create the magical atmosphere that characterizes this period.