ViMusic, android APK to play music from youtube, Ive just come across it when I wanted to listen to some OST that were only on youtube and my phone by default doesn't let me play youtube and block the screen. Im not gonna pay any subscriptions ever.
I have android, idk if its because its old but I cant play youtube and block the screen, the music stops and youtube tells me to play premiun to be able to do that.
Also vimusic works offline too if you download the music before, like downloading the mp3 directly.
Someone forked it as RiMusic and fixed a lot of bugs with the original version and added the ability to download songs (as opposed to hoping they stay cached)