I use to list my freezer contents in another app which would remind me of expired items. Unfortunately you needed to guess how long you could store perishable items and then enter that date in the app so itll remind you.
This app has a database filled with food storage data. All you need to do is pick a food and the recommended storage date is entered automatically. When the items expiration date comes due the app will popup a reminder.
Some features Id like to see added are an iPad version and synchronization across all my iDevices.
RVR57 about Freshbox