Some time ago, I heard about a new app on my writer's forum. It's called Book Sprout, and it allows you to follow your favorite authors and receive updates on their new publications. It's still small (but growing), and I was intrigued by the idea of a sort of personally tailored book recommendation service that would send updates to my phone, so I've signed up.
If you're interested, look here. The app is free: https://booksproutapp.com/
I am an author on there, so give me a follow if you want to use your phone to keep up with my new releases.