Its worth a shot, but personally Im glad I got it for free. Its an interesting concept, and I like the one-touch controls, the songs, and the hidden notes. but there are a few things that keep me from playing this game more often than once every few months.
-hidden notes are too hard to find sometimes, resulting usually in an erased multiplier.
-when a level is replayed it should reset the custom coaster song that way if a little sibling plays the game (or something along those lines) your coaster isnt doomed to a repetitive streak
-there is way too much hype over IAPs.
overall Id pay a dollar for it if I had to choose again, but not $3
for a free music game get tap tap revenge, for a fun game get cytus, for a hard game get almost any other music game.
in short this game is as simple as music games get, although it is fun to pull out once in a while when you dont want to think about what to do