This paper investigates consumption patterns in digital subscription-based streaming services for books by means of a large-scale dataset derived from Storytel. The aim is twofold: to empirically discuss how book consumption in the commercial top segment diverges between print books and digital streaming platforms, and to conceptually show the usefulness and considerable possibilities with computational approaches for digital publishing studies and contemporary book history. This is accomplished by introducing the concept of the beststreamer, and the average finishing degree measure. The empirical output shows large differences between print bestsellers and digital beststreamers, both in terms of genre distributions, finished streams, and levels of completion. These results are discussed in relation to factors fostering consumption patterns, such as platform design, pricing models, supply, marketing, customer base, and media-specific features of the audiobook. [ABSTRACT FROM AUTHOR] more...