Welcome! If you stick to it, FitDay will help you lose weight. I lost +/- 200 pounds in less than a year by using it several years ago. Unfortunately, I was not able to maintain my loss (and of course, quit logging my food/exercise) and gained it all back (though it did take a while).
Now, I am back and have lost at least six inches off the waist in six weeks doing 1500 cals a day. If you are serious, stick to your eating plan and religiously track it in FitDay you are guaranteed success.