BrainWavez application is a sound generator, that creates different sounds according to what the user chooses.
This sound is heard through headphones with special membrane connected to the iPhone through a 3.5 mm pin. To connect it the user needs a special adapter that convert the iPhone output to 3.5 mm pin.
The user have a menu where he can choose from few options. Then he can choose the duration. After starting he can pause, play or stop by buttons on the screen.