motivation needed

Hello there. Been looking for a free calorie count app as I really want to loose weight. Slimming clubs are so expensive! I am 16st 3 1b and 5 ft 8,married with 2 kids. My goal is to reach 15 stone,then continue to loose more. The thing that has motivated me again is by a so called friend calling me a fat cow at work. Since then I have been down in the dumps and need to motivate myself. So here I am giving it a go!