Cameron from St. George, Utah has a huge pantry he needs to organize. I told him about two apps: Pantry Check and Home Food Storage. In both of these apps, you can use a phone to scan or manually input and export items, add expiration dates and even note the location of each food item.
You can get Pantry Check on iOS. (The developers are still working on an Android version.) The same goes for Home Food Storage on iOS, which was built for meal preppers.