It has been a little over three months since I started using MyFitnessPal. Since that time I have lost a significant amount of weight (32lbs). This of course has been a combination of watching what I eat and going to the gym more. For more information about this app and web site see below:
Created by MyFitnessPal – Free Calorie Counter
You can also read my more in depth One Month MyFitnessPal Review