Nope
Doesn't work
Not as described
You cannot create folders for audiobooks and it does not remember the settings so after each travk you have set the volume and speed again.
BookPlayback User Reviews
Is BookPlayback Safe?
Not enough ratings yet to assess BookPlayback.
Is BookPlayback Legit?
BookPlayback is no longer available in the App Store. AppsHunter Legitimacy Score for BookPlayback is 35/100.
Based on 35 of 100 points across 7 verification signals from App Store and developer data.
Score capped because this app is no longer listed.