aComb is simulation that allows you top play different sounds and in the meantime you can trick your friends that you are really playing with lips on your phone, just like a real comb. To do that just get the phone close to your lips and then you can move both thumbs over the screen.
Use "Menu" option to change the sound or volume. There are currently 11 different sound options.
From "Menu" option you can chose where to place Ads for maximum comfortability while playing.