There are apps for everything.

Apps to play, apps for work and a few out there that can help you make healthy lifestyle choices.
Fooducate - Scan the bar code on most foods and get a letter grade and info about the product.
Viaden has a free Pedometer that seems to be working well.
NikeWomen has a free training club app for women and girls interested in exercise.
Let us know if you find a great app - we'll share it.