There are thousands of free gaming apps in the market, but the question is, do they give you satisfaction in a game? Admittedly, many of them are developed thoughtlessly. So, you don't genuinely enjoy as much as you would playing paid games.

This One Dollar app will provide you with hours of fun, amusement, and satisfaction with only a dollar. Using your finger, keep tapping the color-changing buttons for as long as you want to.

It is very addictive, as the game does not require memorization of complicated rules. You just need to open the app and keep tapping until you get tired.