Chippy by Cramzy.com
Chippy LITE is a beautiful remake of the old-time classics Pang (Bubble Trouble).
Chippy Lite is free, and features 5 interesting levels, great music and many bonuses.
Use your left hand to control directions (left/right) and your right hand to shoot.
Chippy is Free in the iTunes App Store
Developer Website: http://www.cramzy.com