Quitter This app allows you to enter the day you quit smoking, the amount of cigarettes you normally smoke and calculates the amount of money you've saved by NOT buying cigarettes. If you're motivated by money, this is a great app.

LIVESTRONG MyQuit Coach - Dare to Quit Smoking This app helps you make a plan to reduce the number of cigarettes you smoke before quitting, lets you win badges and also gives you ways to customize tips and inspiration.

Angry Birds If you're giving up one addiction, use another thing for a distraction. Instead of a smoke break, take Angry Birds breaks. Just be careful it doesn't turn into another addiction.