The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Blue Diamond Gaming:
Waiter Rater: Tip Calculator is the most fun you will have with a tip calculator, guaranteed!When you're out to eat just fire this app up and go through all of the report card style grading categories and come up with an overall tip that is appropriate for your server.Laugh at all of the hilarious possibilities as you come up with the tip for your service.Did your waitress spill some foul smelling tartar sauce when she was too busy flirting with your significant other? There's a tip for that!Was your waiter out on a smoke break so someone else brought your food and gave the wrong plates to the wrong people? There's a tip for that!Was your server more like Dopey than Doc of the 7 dwarves, and would you describe your experience as the song "I Wanna be Sedated" rather than "Another Day in Paradise?" There's a tip for that!Did you go a bit overboard on how great or poor a service you had? No problem! Change the tip % at any time by simply tapping it and put in whatever you feel is accurate!