A tip calculator which allows you to specify the U.S. state's tax percentage value into the calculation. It also allows you to specify the tip amount and the number of people to split the bill with. The calculation happens automatically after changes on the user interface.
The U.S. state is selected automatically based on your current location. If the current location cannot be obtained by your Android device, the previously selected U.S. state will be used.
Any bug reports and enhancement suggestions are always welcome.