Smart-audiobook-player-v6-3-7-apk--unlocked----abbaspc -

Variable speed (0.5x to 3.5x), noise reduction, and equalizer.

Independent progress saving for every book, support for covers, and character lists. Smart-AudioBook-Player-v6-3-7-APK--Unlocked----AbbasPC

Sleep timer with a "shake-to-reset" feature if you fall asleep. Variable speed (0

Modified APKs from unofficial sources often bypass the developer's licensing to provide "Pro" features for free. Using these versions is risky for several reasons: Smart AudioBook Player v6.3.7 APK (Unlocked) - AbbasPC Variable speed (0.5x to 3.5x)