I have found that there are several iPhone apps that I can't live without now!! The first and most important one is called Total Baby and we use it to track her feeding, diaper changes, baths & sleep times. It was like $4.99, but it has been so worth it!! Now when we go to the doctor, I can tell him specifically how she's doing - which may seem over the top to some people, but it really helps me keep my head on straight. Without organization, I go insane.
I also can't do without Facebook because I'm constantly uploading pictures & messaging my friends who are moms with different questions! Keeping in touch has never seemed so important!! It's also really fun to play around on Facebook at 2am when you're up feeding the baby.
Other middle-of-the-night entertaining apps are Words With Friends (do you have a username?? let's play!) and Echofon where I'm checking Twitter all the time. I also play Solebon Solitaire and update/check my Tumblr stuff.
The main app that I rarely used before that I use now with every middle-of-the-night diaper change is the Flashlight app!! Oh how helpful when you want to keep it dark to signal to the baby that it's nighttime, but you need to see that little bottom to clean it off!
I've also been using the Notes app way more to keep track of her schedule and my schedule and things like that. And I've started using my Polarize and Mill Colour apps to edit my lovely pictures of Isis!
What apps are you using??