Software to inventory vinyl collection

The Discogs app is very good. Once installed click the search icon and enter the number on the album or if the album has a bar code scan it with your device.

If you make your own spreadsheet in Excel, you can sort various ways, add columns, ....

I would want to do that in someone else's software.

Discogs: can you download/backup the library?

On a PC you can export your collection. 

I like the discogs idea. It really depends on how long and what you want to do with your list.