A tip or gratuity is an extra sum of money paid to certain service workers for a provided service. Tip amounts, as well as acceptance, vary in different parts of the world. In some countries in East Asia such as Japan, tips are seen as insulting and can sometimes be interpreted as a bribe.

WhatTheTip is a simple and easy to use app. It calculates the tip amount and total bill amount for you. All you have to do is enter your bill amount, select the tip percentage on the slider, and press calculate.