Pretty good game! It was simple which made it pretty intuitive, but maybe it could use something to keep it more interesting and replayable for longer. I think the stars look a little too much like the other arrows, so something to make that a little clearer would be nice. In case you're gonna implement the on-screen rotation buttons I would probably recommend using the entire left and right sides of the screen as buttons. With that you could also move the circle down a bit so you have more room to spot incoming projectiles from the top. The leaderboards currently just give an error, would be nice to be able to see how well you did compared to others and your earlier playthroughs. I think it could also use some more sounds or some background music.
Overall a pretty decent game, good job :)