This is an amazing game, super addictive and fun. Completely spoiled by the fact that some taps just don't register at all. So I'm at a level now where I can complete all the standard and difficult level songs pretty much perfectly, except I keep losing because a very definite tap is not registered. I emailed their support email address and they just said that they're sorry to hear it but no offer of fix. Completely pointless to download this game in its current state.