Yes, it's too good to be true as the page of this book reads.
When I checked the website about this world of music, I thought it wasn't real and I need to make a purchase before I can have my own playlist. There is some advertisements from time to time but it never gave me a negative impression even if I need to sign up and provide my personal details. Would you go beyond free and pay a certain amount to get this app or just enjoy your own music with your own composition using the instrument that I've found here?
I guess when you crave for more, you'd end up to an upgrade version and spend a few cents for an exclusive subscription.