Bookify is an iPhone application developed by Markus Fischer that aims to optimize the listening experience of audiobooks on Spotify. It falls under the category of Education & Reference, specifically in the Books subcategory.

With Bookify, users can set bookmarks within audiobooks and easily navigate back to them. Additionally, the app offers a sleep timer feature, allowing users to listen to audiobooks as they drift off to sleep.

One of the key features of Bookify is the ability to browse and select from over 10,000 audiobooks available on Spotify. Users can also access additional information about their chosen audiobooks. Furthermore, the app provides a feature that allows users to search for the books on Amazon, enabling them to read reviews or make purchases if desired.

Another convenient feature of Bookify is its compatibility with car audio systems. Users can listen to audiobooks in their cars and conveniently control playback, view book covers, and track progress directly from their car's steering wheel controls.

Please note that a Spotify Premium account is required to use this app.