I'm looking for an Android app to visualize music on the device in real-time.
- It can process the audio from an external app (basically whatever is played on the device). Embedded audio player is not necessary.
- Multiple visualization effects to choose from; not just frequency distribution or waveform, but also more complex patterns (e.g. morphing tunnels, etc.).
- A standalone app is sufficient (no need to display the visualization as a live wallpaper).
Paid apps are OK.