Mar 26, 2013 - ebork Developments is proud to introduce bigtipper 1.0 for iOS. A very useful tip calculator which is easy and quick to use. Given the total bill amount, bigtipper gives you ideas for a low tip, normal tip, and high tip. These default values are of course easily customizable to your liking. Do you want to split the bill with your party? No problem! bigtipper handles this for you as well! Swiping on any of the cells will animate to a slider and the user can easily adjust the % to be calculated.