Manage shelves (or storage in general) by adding items to sections.
Each item can have a name, a client name, a note, entry data, return date and you can even set a reminder via notification.
You can export your data to a file and then import it (for example you can send that file to another device and import it there, either through the settings screen or just by opening the file with the app)
No ads (fully free, no premium or in app purchases).
No need for internet to use this app.