Also, I look at it as though I gained a pound a week. :)
Oh hunny, I am 24+5 and have gained 24 pounds total! Sooo I would say no that's not excessive. :) I was worried about my weight gain, but my OB nurse said I was fine and they expect me to gain 40 pounds by the end of my pregnancy and I'm at the half way mark (passed it actually). I'm all belly so I'm fine with it, besides I know I'm going to lose the weight after my son comes. Don't worry about the app and what it says about weight gain, as long as your OB isn't concerned and you and baby are healthy then that's all that matters. Good luck and best wishes!
Is this your first pregnancy