I’d like to create some sort of visualization in my app that uses the music that’s already playing in on the device (iPhone or iPad). Is it possible to get the audio data that is being played by other apps, such as the default music app, or even something (third party) like Spotify?
Basically, I just want my UI to react to the music playing, but I’d rather not force the user to use my music player for the UI to react.
No, that is not possible. Sorry.