Who says popes are old fashioned?
The Catholic church just approved the "Confession" app (which at $1.99 is a bargain compared to the 10-percent-of-income tithe), in which you can "keep track of your sins"—w0000t. Peep the handy sinning checklist system:
It's being marketed as "the perfect aid for every penitent," and if that doesn't sell it to you, I don't know what will.