This app was mentioned in 5 comments, with an average of 1.20 upvotes
There are lots of app suggestion posts posted here already that should give you some choices depending on what you like to use it for.
I use this one: https://play.google.com/store/apps/details?id=com.metosphere.bookfree
I'm sure there's lots of better options out there, but I've been using it for over 10 years and I like it just fine. I like that it's free, I can customize the titles, and there's no limit to how items many you can add.
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I've used Book Collection for about a decade. just throwing another free option out there.
https://play.google.com/store/apps/details?id=com.metosphere.bookfree
https://play.google.com/store/apps/details?id=com.metosphere.bookfree
I've used this app for like ten years.
On my Android phone, I've used Book Collection & Catalog. After scanning, it allows you to export to CSV.