Anyone know if there is an all-in-one type of fitness app where it has a great food search engine like MyFitnessApp but also has a great running tracker with GPS and elevation tracking like RunKeeper? I'm sick of using multiple apps and having to go back and forth entering data.

there's a zombie themed one that's kind of a game/fitness app in one, called "Zombies, Run!"...but then, I just read that the rest of your app requirements...
whoops.

http://nikeplus.nike.com/plus/products/gps_app/