This app need the support of audioble audiobooks file type.
I have perform topic modeling for the reviews of your app with LDA (Latent Dirichlet Allocation) approach. One of the dominant review of the topics says: "V good app Small but serious problem:. have like 90g of "system data". I know what most of this is: downloaded audible audiobooks audible (large audible listening queue), and poss some downloaded podcasts. Can always clean out audible app if need space. (can't xfer books to SD card [pixel]) (audible app design flaws [re v large audible libraries] make library mgmt difficult otherwise) Since all this is clearly "media" I wish the DiskUsage app showed the breakdown into audible books etc."
I analyse not just this app but also some of the competitors (e.g. Storage Analyzer & Disk Usage and Avast Cleanup) of this app. The audio is a keyword in the topics and it doesn't have any appreance in the compititor apps. So this is a advantage in the compitation.