Version 1.2.2 of Date Calc is in review with Apple, hopefully it will be out later this week.

It has introduced a bunch of new features, as well as fixing a crash that would occasionally happen when scrolling a long way through the calendar:

• Now includes Date Offseting by business days or calendar days, and to or from any date
• Chinese holiday calendars are available on the settings screen
• You can see the days between as years by tapping on the display
• Date Calc is now fully integrated with Mail!

Thanks to everyone who gave feedback, and especially Lynn S for the beta testing.