I used one called CLZ music. Scanned all the barcodes on my CDs as a way to stop me buying duplicates when out shopping.
Didn’t really use it tbh.
And mostly buy CDs online now, sat in front of my cd collection so it doesn’t happen anymore.
is brilliant and does a whole lot more besides, but (as someone just mentioned) it does involve cost! As well as the mobile app, I use many extra capabilities offered by the desktop PC software. It will all sync instantly with other devices and the cloud, too.