You want to simply manage your kids' pocket money ?
Just create some tasks, with a reward price. If one of the kids do a task, he automatically get the amount on his personnal account. As administrator you can see the $ amount of each family member. Then you can choose to give the shown amount to your kids or do a system like "If you get 10$ on the app I'll give you a little present".
Feel free to be creative and submit us all your ideas to improve this app :)