Tip-O-Matic for Windows Phone 7
Tip-O-Matic allows you to quickly and easily calculate tips in a variety of ways.
The app provides 3 different interfaces for calculating tip information. There is
a Quick interface that only requires a few values, a Detailed interface that provides
more fine-tuned calculations, and the Dial-a-Tip interface where values are changed
by rotating different dials.
Round your totals not just up and down but to palindromes and prime numbers as well. Currency can be displayed in Dollars, Euros, Pounds, or Yen.