I love that you released a fully functional free version, I think you can release a separate [pro] version now that would somehow replace your lock screen with

I love that you released a fully functional free version, I think you can release a separate [pro] version now that would somehow replace your lock screen with these awesome visuals. People would pay a one-time fee for that $2-$5 and would happily support you and your works. Great endeavor, keep the music coursing!