Really awsome, but...
...it's a little to hard to anticipate the saws, especially when you're tunning really fast. Sometimes the !'s don't even show up in time! Maybe use that big, giant empty space at the bottom of the screen to include a map of where the saws are so even when one is going super fast, the saws won't appear out of nowhere Great game though! Maybe you could even add a slide action and add a sort of bridge you have to slide under, like a lot of those "jump/slide/dive" games, but that might be too cliche. :P Still, great job for your fist game!