Coincidentally, I recently bought the creative bundle. Very nicely executed. Tell me about the issues you found when considering the use of the phone mic or general music playback as input to the visualiser.
Happy to hear you like it! This year I'm also planning some updates for the rest of my apps.
So far I don't have any technical issues with the input sources, just need to find some time to work on them. (These applications are developed as weekend projects, so it generally takes a while to add new features.)
There is a hole in joe public visualiser apps that will work with any input, without too much additional setup, and taking that visualisation and superimposing it anywhere, with little or no 'setup'. There are many that do incredible things with video (EFEKT) but it's not obvious how to add to, say, OBS. Joe Public are spending more and more time making little digital things, if they could play together, that would be something. Audiobus for video.