I think this game has a lot of promise, although it is plagued by usual mobile game shenanigans: paywalls, intrusive ads, premium memberships that last about a week etc. If this game allowed you to play as much as you like, not limiting you to how many free slots you have, I might even give it five stars. Hell, if it had a level editor and all tracks available for free, I would definitely pay for it, and I think it could be one of the best modern rhythm games, but that sadly won't happen.