We have 2 cheats and tips on iPhone. If you have any cheats or tips for Touchgrind please send them in here. You can also ask your question on our Touchgrind Questions & Answers page.
Scroll to the 'How To' option and tap the still visible 'O' in the 'About' option. When you select any board the hidden course will be revealed.
Scroll to the 'About' option and then tap the 2nd 'O' in 'Options' (the only one still visible). When you select any board it will be white.