Bingo Numbers Generator

Why would anybody need or make a Bingo number generator? Well I was a group leader of a kids activity organization where we did activities once per week. Of course Bingo was played but the original game was so yanky and hard to do that it didn't really work because it would take so much time to re-enter all the balls after 1 game. So I created a small webapp where you could do exactly that, focused on mobile so you can just use it anywhere/anytime.