Tension Software (http://www.tensionsoftware.com) has updated Date Time Calc, a Mac OS X time calculation app, to version 2.0.
Date Time Calc is an application for calculating future and past dates by adding a date interval and calculating date difference between two assigned date. With version 2.0, the log can collect and save all the calculation you need to record using a command button. At any time you can clean the log, resetting it.
Date Time Calc requires Mac OS X 10.8 or higher and costs US$4.99. It’s available at the Mac App Store.