you don't need to loose weight!!! I'm female, 14 also and 140 pounds!!! It's muscle, as you grow up, you gain muscle, and healthy fats.
I've been trying this app but it's been hard to find motivation to work out and diet!!
I am the same , I'm 14 , my weight is 165 and I'm 5'5 . My goal is to loose about 2 stone.