White Noise.
This app generate random noise, with the equalizer you can easily control the pitch of the sound you would like to hear.

If you ever had a static noise that drive you crazy while you are in the office?
if you are easily distracted with sounds breaking the silence?
Then this app may help you work and concentrate on what matter!

The app come with some pre-determined settings to help you find the right sound for you.

In some cases, ADHD can be overcome with white noise.
for example : http://www.additudemag.com/adhd/article/6275.html

We are not claiming that white noise is a cure for ADHD, but for some people it may help.