I use an app called Reading List.

I prefer it to any other option because you can see book title, cover, author, summary, page count, and subjects at a glance.

You can also add notes to each book and organize your to read books into sub lists.

I put in my notes whether I own the book, whether it’s part of a series, etc. and I have my to be read books further organized into sub lists based upon genre and whether they are adult or YA.