A free app for Android, by CICI Great Workshop.
Pure Player: Music Player App is a music player app that supports MP3, MP4, WMA, WAV, ASF, AAC M4A, VQF, FLAC, APE, MID, QGG, MOD, MOV, and many more audio formats.
It allows you to import all your favorite music, and listen to them without internet.
It has a built-in music database so that you can search for the songs you want to listen to.
If you want to manage your playlist, you can import music from your friends, download from the internet, and even from other apps.
In addition, it has a built-in equalizer that lets you adjust the sound to your preferences.
Pure Player is a free app and does not have any paid options.