Well, I haven't seen anything like that yet. I think this could become a good mobile game if you improve some things :)
Few notes:
- It would be cool, if the camera zoomed out and back depending on your distance to the middle.
- The timer should tick down and not up so the player knows, how much time he has.
- It looks like coins spawn on predefined locations - I had the coin 4 times at the same location - make it random.
- The music gets annoying very quickly :p
- I would add some line, that would indicate, how high is the coin, it can be quite tricky to judge, how high should you go (something like in the picture) :)
