Flight times entered into your calendar by Worldmate change as you fly to a another time zone. This makes you either very early or very late! I asked their App Support and they responded with the following quote "When the calendar’s time zone changes, i.e.- when you are traveling, flight items (or meetings/ ground transportation items) will change in accordance to the new time zone." They indicated that there is no override or workaround.
So, that 10:55 return flight will be auto changed by 1 or 2 hours or more either forward or backward depending on your East or West travel.
For me and any traveler, I think this makes the app useless.
AzShopper about WorldMate Travel Plans & Flight Tracker