Bezier Expert app for iPhone and iPad

OVERVIEW
Bezier Expert is a simple and enjoyable app, which measures and trains your ability to draw a Bezier curve.
Bezier curve is a curve frequently used to draw smooth and scalable illustrations and to create fonts.
With this app, your iPhone/iPad/iPod touch will become a good Bezier curve trainer, and you can intuitively grasp how to operate it.

FEATURES
-Multi-touch (up to 4 points) operation available
-The number of stages is infinite
-6 levels of difficulty
-Free drawing mode available
-No ads
-Free
-Tweeting of your work available

HOW TO PLAY
-Your task is to move a colored line in order to make it overlap a gray line.
-There are four colored circles. They are critical four points of quadratic Bezier curves. You can move them by touching and dragging them.
-When the colored circles moves, the colored line will move accordingly.