Hour Calculator Plus

"Hour Calculator Plus" is an application which allows to easily add, subtract, multiply or divide hours and minutes. Ideally designed to help pilots to fill-in their flight log book, "Hour Calculator Plus" allows more generally to compute a journey time, an estimated time of arrival, the usage duration coming from an hour counter, a sum-up of working hours, or share flight hours.
"Hour Calculator Plus" allows to add or subtract times (hours:minutes) between themself (i.e. 12:35 + 1:40 = 14:15). It allows also to multiply or divide times (hours:minutes) by an integer (i.e. 2:50 x 2 = 5:40). In the case of a non-integer division, the remainder of the division is displayed on the left side of the display for information (i.e 4:35 / 2 = 2:17,5 r:1).
"Hour Calculator Plus" allows a straight forward digits entry without ":" and displays an historic of operations done to facilitate its check.
It is to be noted that in order to allow a confortable usage of the application in any position, the portrait mode has been forced on purpose.