I came across a reference to this app last week and have used it every day since. If you have a library card you need to enter your card details into the app and hopefully your library service is accessible from the app. I know that not all areas of the country are featured. I am lucky that in Norfolk, a library card lets you borrow and return books to and from any Norfolk library, and not just in your own particular town. The Forum in Norwich is a wonderful library with a massive range of books and other media, and I can access that via this app and download up to 6 books to the app and onto my phone.
My journeys to and from work this week were accompanied by Alan Garner's 'The Owl Service', and I now have 'Stig of the Dump' lined up for next week.