simple and fun little game idd.
(level 3-4-5)the line attached to the ball and circle the ball is attached is missing
(level 4) the "physics" in the platforms that move up and down are bit wrong. If you hit the ball one of those platforms, there are times that the ball will "avoid" the platform and move to its normal direction. doesnt happen all the times though
suggestion: if you are going to add more levels, i suggest you give the player an extra life for every i.e. 5 levels or 1500 score.
or if you are going to add a menu, add this "extra life" thing in the easy mode.
keep it up! if u continue developing this game and add more stuff it can get really fun!
btw, since i have no idea about wm application developing, but im really interested in this subject, can u send me a pm with some details about how to get started or some info (like what languages do u use and stuff).