I am loving this site and hooked to it. It has a nutrition tracker which shows you how much you should eat daily in order to reach your goal. You will take note of what you've eaten for entire day and put it down on the tracker and you can see how much you consumed so you don't over eat.
There is a fitness tracker where you have to plan your exercise like they recommend cardio 3 times a week and they will give you strength training exercise plan. They will show you how much calories you should burn a day in order to reach your goal.
In all I love this because it's like getting a fitness trainer & fitness program for free =) So I'd recommend you join it today to a healthier you.