Too big, too small, too fast, too slow?? By tapping your screen on the left or right, you control the size of the ball in the centre of your screen. As each hurdle approaches your ball, it is labelled with a value that you must achieve (size of your ball), in order to make it through each hurdle.
To master each level you need to collect all the stars held within. Point of warning, the mastery of each level may not be achieved utilising the "Assisted Mode"...good luck!
This app is optimized for iPhone 5.