I just thought I would share a few of my favorite preg apps for Droid - I think some are also available for iphone.
BabyBump - This lets you keep a weight journal/feelings journal - the paid version has a kick counter and contraction timer!
What to Expect When You Expecting - pretty much the same weekly descriptions you will find in the book
BabyCenter Pregnancy - Daily updates and a checklist - links to the site
Pregnancy Assistant - (this one has oddly written descriptions - perhaps foreign?- but great fetal development pics)
Anyone have any others? I love apps and am always looking for recs!