It's simple. Just click on the "Flip Coin" button. The coin will flip for some time and will stop at some random side.

You can change the color of the coin face in 10 different exciting color gradients. 

Navigation:

Settings --> Heads Color or Tails Color

You can change background color of the page also simply by Navigating to  

Navigation:

Settings --> Background color.

If you want to give some name to the coin flipping, then you cna change it at  

Navigation:

Settings --> "Enter New Title for the Flip" field.

To change heads face name  

Navigation:

Settings --> "Enter New Name for Heads Face" Field.

To change heads face name  

Navigation:

Settings --> "Enter New Name for Tails Face" field.

Anywhere where involves 2 options, except gambling which involves for-profit monetary transactions or betting.

For example,

i. to decide whether to eat a burger or pizza. :)

ii. to decide whether to say Yes Or No.

iii. to divide and play teams in Group A and Group B.

iv. your own fantasy question.

Mostly, Yes.

You can go to Top bar --> Settings --> Full screen.In FullScreen mode, generally, there won't be any ads.

OR you can click on "X" to close the ads section.