I was actually about to start building something really similar to this. basically the recipe part your blog mentions- you'd throw in everything you have in your kitchen and it'd spit out stuff you can make with it.

but yeah I've been in the eating healthier / start cooking more mood recently, but also starting to be more active, so I wanted to make sure I was getting everything I needed. Calculating all of the nutrients/vitamins/minerals by hand sucks!

tldr- this app is awesome. good luck with it :)