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Pro Speeds up the creation of a shopping list by allowing you to choose from a list of your favorite products
The app can show you a list of items you have chosen most often. That list can then be used to quickly create a shopping list from your favorite products.
Pro Automatically categorizes items by aisle
Listonic will show an icon that represents an isle next to the item.
Pro Sync between all your devices
Pro Provides you with useful cooking tips
Pro Easy list sharing with other users
Con Only preset categories available
There's currently no way create your own categories for items. That functionality might be coming in the future.