I've just submitted to the App Store called Line Racer. It's a game that tests your reflexes and control in over 50 levels of increasing difficulty. The objective of the game is to keep your finger on a side-scrolling line which varies in height. Line Racer features high scores, level replaying to get higher scores, and a multiplayer mode to challenge your friends. The options include vibrating when your finger comes off of the line, and a touch trail that shows where your finger has been on the screen. Line Racer can be purchased for $0.99. A limited version is also available as a free download.
The app's webpage has a YouTube video, hints and tips, and links to the App Store.
Check out Maraj – Line Racer iPhone App Available In The App Store for more information.