Floor 57:
-Press and hold the red button (since the button is small you may want to do this with a fingernail) until the hook is right above the ball, then let go of the button to stop the hook.
-Touch and drag the hook downwards until it hooks onto the ball and lifts it up.
-Press and hold the red button again to make the ball travel to the center of the door.
-Tap the ball 3 times to hit the door with it 3 times, which will break the door.
Next Level: 100 Floors Floor 58 Walkthrough
See 100 Floor Walkthrough/Solutions to all floors