Stay in the different lines app for iPhone and iPad

Two lines,Two fingers!Can you hold on?
Swipe your finger left or right to move the dot and stay in the lines .
how to play:
1,Double fingers to touch inside the gray box that says"touch & drag to move".
2,keep your fingers on the screen and drag to the left or right to move.
3,you must hold the balls stay in two lines.
4,keep the ball inside of the black line or you lose.

features:
1,the perfect cooperation of hands and brain will keep you going on.
2,your coordinated ability and reaction capacity will be greatly changed.
3,keep the balls in two lines,this is the core rule in this game.

what is your best score?
enjoy the game！！！