The game is perfectly functional, but the interface is very much in the "I made this game for a summer camp where we make a game" vein.
I would also advise changing the layout of the lights--the density of the grid combined with the size of my phone meant i was constantly missing buttons i had meant to push, but were smaller than my fingers. Maybe instead of a 5 by 5 grid, it would be better to have a grid that fit the iphone screen.