I finally put my $15 gift card from Christmas to good use. Not all of these cost money by the way.
For the kids: Lego Photo. Changes a picture on your phone to a mosaic of legos.
This is a great app. The design of it and ease of use is awesome.
MyWard: syncs info from lds.org = calendars, directories, addresses, etc for the entire stake.
Church Bingo: Can't wait to put this to good use this Sunday. Below is an example. I can also install my own phrases that are commonly heard in my ward. How about "A voice of an angel"!