How do I view all gifts for a store?

To launch the screen showing the stores that have at least one gift assigned to them, tap on the the store tab at the top of the launch screen.

To view all gifts for a store, just click the store's name.

Note
When adding or editing a gift, you have the option to assign that gift to a store. Once you do so, that store will be shown in the list of stores. Stores with no gifts will not be shown to reduce on-screen clutter.