Game is very cutesy, very simple, but well put together.
Some of the things I noticed could be improved:
-Clicking the start puzzle button over and over got annoying quite quick, perhaps starting the puzzle after a certain amount of time would help
-Whenever the right combination is being showed, you can still interact with the balls, which probably should not be the case
All in all, great game, I could see this being quite and entertaining phone game with a bit more content.
Keep up the good work!