"Hour Calculator Lite" is an application which allows to easily add or subtract hours and minutes. Ideally designed to help pilots to fill-in their flight log book, "Hour Calculator Lite" allows more generally to compute a journey time, an estimated time of arrival, the usage duration coming from an hour counter, or a sum-up of working or flight hours. "Hour Calculator Lite" has been intentionally limited to add and subtract operations in portrait mode to ease its usage. It allows a straight