Touch Grind (iPhone iPod)
CheatingDome.com
Hidden course
Scroll to the "How To" option. Tap the still visible "O" in the "About" option. Select any board to access the hidden course.
White board
Scroll to the "About" option. Tap the second "O" in "Options" (the only one still visible). Select any board and it will be white.
Scroll to the "Competition" option. Tap the "O" in "Options". Select any board and it will be white.