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

The current official version is v11.7.x , making v6.3.7 extremely obsolete. Key Features:

Smart AudioBook Player is a dedicated tool for playing DRM-free audiobook files stored locally on your device. It does provide a library of books; you must supply your own audio files. Smart-AudioBook-Player-v6-3-7-APK--Unlocked----AbbasPC

Sleep timer with a "shake-to-reset" feature if you fall asleep. The current official version is v11