HBS is an Android application that allows users to access audiobooks from Hljóðbókasafn Íslands, an Icelandic library. The app is free to use and falls under the Education and Reference category, specifically Books.

The app's user interface is simple and easy to navigate, making it accessible to users of all ages. Users can browse through a wide selection of audiobooks in Icelandic, with options ranging from classic literature to contemporary works. The app also has a feature that allows users to save their favorite audiobooks for future listening.

Overall, HBS is a great tool for those looking to improve their Icelandic language skills or simply enjoy a good audiobook. It's a great resource for those who may not have access to physical copies of Icelandic literature. However, it's worth noting that the app is only available in Icelandic and may not be suitable for non-Icelandic speakers.