Sometimes when you go out to eat something with your friends or your family, the place where you go doesnt let you pay by separate bill and you lose a lot of time calculating how much everyone has to pay.
So to make it easier, you can use Just My Bill App, you just have to write the amount of the bill, the % you want as tip and one by one the name of your friends, the price of everything they consumed and how much do they have to pay.
With this done, the app will display a list with the name of your friends, the total amount and the change they deserve.