Airline Crew In-Flight Rest

Pilots on long-hauls flight have to calculate time for the crew-rest, therefore the user friendly 'CrewRest' App correlates with them – which allows all personnel to access crucial information with ease and comfort. 
 CrewRest app is made in a way to enable calculation for : - “4 Pilots” - 2 full sets of crew (2 Captains and 2 First Officers) - “3 Pilots” - 1 Captain and 2 First Officers - “Q Flt Crew Rest Calc” - Alternate Calculation used by some Airlines