The Windows Phone app which has gone free next as myAppFree app of the day is Kwit. This app uses game design techniques, game thinking and game mechanics to encourage people to quit smoking.

Quitting smoking is the best thing you can do for yourself. Get started now and have some fun doing it.

Kwit Description:

You’ll have access to useful statistics such as the time passed since you’ve stopped smoking, the money you’ve saved and the number of cigarettes you haven’t smoked. You can monitor these statistics live.

There are also 84 achievements for you to unlock. When you reach some of them you’ll even get info about the benefits of stopping smoking for your body and your life.

Finally, you’ll be able to share your progress with your friends on social networks, by SMS and email.

Shake your phone to draw a motivational card (40 different cards available) when you feel craving for a cigarette coming on. You’ll get a tip on how to avoid lighting up and feel better.

Download it today, it is FREE!!!

Developer: Jean-Fran├žois Kraemer
Price: $3.99