Apr 29, 2015 - Bleana Inc. Announces the update and Apple Watch-enabled new version of their popular tipping calculator app Cow Tipper! for iOS. Are you unsure of how much to tip your server? 15%? 18%? Who knows? Answer 3 easy questions about your service experience to see a suggested tip amount based on your bill. CowTipper is the first tip calculator app for the Apple Watch that is based on user experience, has a fun-looking user interface, and offers a minimum of taps to calculate your tip.