This app is a rip off!

Do not buy this! Unfortunately I ordered a song and my app keeps throwing me out when I try to access it. I contacted technical support and they basically gave me a few suggestions which did nothing to correct the problem. They said some other tech people would contact me, they havent.
They should change the name of this app to:
"wish I had music notes"

Dr Liberty about Legacy Musicnotes Viewer (Unsupported), v4.0.0