Nothing puts the dampeners on a friendship quite as quick as individuals being precious about the bill at the end of a meal. Between talk of who had what, and “I didn’t have a dessert” and who ordered all the extra bread – someone will no doubt be scribbling down the information on a napkin and trying to make sense of it all like Russell Crowe in a Beautiful Mind. Tip Calculator is the answer to this madness and can save you from a few needless arguments.