Home Inventory+ app for iPhone and iPad

Home Inventory+ allows you to organize, catalog and search items in your home.
You can create locations that represent your home (bedroom, living room, etc.) and insert items or objects into them.
You can create categories to better organize them and see some data (like total cost or current value).
This helps keeping all of your ownings in a organized way.

You can also search or ask Siri where is an item that you need.

All of this data is synced with iCloud so you have all of your data on all of your devices.
You can also export the data in CSV and open it in your favorite app like Numbers or Excel.