It worked well for me
I tried to stop smoking a few times without success. When I tried this app it made it more of a game. You can watch your stats change for the better as the time passes. Im currently at 2 years 196 days smoke free. Its a simple app, but it helped me make a positive change for my health.
Darkhorsley about
My Last Cigarette - Stop Smoking, Stay Quit!, v2.40