Wise Words for Moms by Ginger Hubbard. We would suggest this for EVERY family! It lets you quickly look up an issue that your kids are dealing with, find a couple Scriptures that deal with it, and gives you direction on how to redirect your child!
The Bible App for Kids - This is a fantastic app for kids, ages 4-6 or so. It does a great job telling Bible stories in a super fun way, with some games and activities!