This app was mentioned in 7 comments, with an average of 1.43 upvotes
I utilize VG collection tracker. Very easy to use and has been very helpful when I'm out trying to make sure I'm not buying a duplicate. I've shared the free app, which will serve its purpose.
https://play.google.com/store/apps/details?id=com.rvdsoft.vgcollectiontrackergratis
I'm using VG collection tracker and to be honest it been amazing it's the only app I've ever paid for the full version of as it does everything I need and does it well.
You can create your own tags if you want to mark things as complete or not played yet, the only extras the paid version has is export to spreadsheet and using the camera to take pictures of game boxes (there's a built in Google search so it's rare you won't find what you need)
Highly recommended anyway give it a go and see if it's for you
EDIT https://play.google.com/store/apps/details?id=com.rvdsoft.vgcollectiontrackergratis
I use VG Collection Tracker. It's free and it takes data from internet (so everything is automated). Didn't have any problem so far. Here's an example
After a quick search, I found this one/ https://play.google.com/store/apps/details?id=com.rvdsoft.vgcollectiontrackergratis
> https://play.google.com/store/apps/details?id=com.rvdsoft.vgcollectiontrackergratis
Nice I never noticed that
I use VG Collection Tracker which spans many consoles and games. It's not perfect, but the free version is very useful and the Pro version adds a few more features for $0.99.