MUSIC APP
Shanling has a free music app available and although it does lack some features found in others it's actually quite good.
This music app offers a total of 10 available equalizer presets which actually work very well.
Needless to say, the app fully supports FLAC playback and even though the aptX wireless codec is not quite on par it does produce very good results.
As i said earlier the app may lack some features and settings offered by others but still it should be more than sufficient for most people.
For this review i used v2.3.0 of the Shanling music app (along with several other apps on my Redmi Note 11 Pro+ and of course the FiiO M15 Music Player).