Develop an inventory app for items in refrigerator and pantry that cross references with BMaP

Create an inventory app where I could put what things I have in the freezer and pantry.

When I added something to BMaP if I had that item in the freezer I would be alerted and asked 'do you really need this?'.

Let's say...in the morning at work I decide I want spaghetti and meat sauce for dinner.

I pull out BMaP and add hamburger. Because hamburger is in my inventory app BMaP tells me I have 3 pounds in the freezer.
'Do you Really need this?'.
I select no and it does not go on my grocery list.