I also use Goodreads.

I’m not very organized and if I used anything other than an app, I’d lose it probably. Goodreads is easy.

My favourite aspect is that I can set a reading challenge for myself for the year. I started this a few years ago because I felt I was watching too much TV. It reminds me when I’m falling behind which I find motivational. I also like to be able to look back over the years and see which were my favourite, or least favourite books.