Love this app!
I’ve had this app for years, since my iPod Touch days. I’ve most of my library on it and keep track of what I’m reading and where and later on how much I’ve read and when. I’ve added magazines to the app when I had multiple on the go at once. I use it for reference of what I’ve read of an author, and which ones I own. It’s available offline so no need for internet when in the depths of a library or bookshop. Haven’t used it as much recently since I’ve had a second child.