There is some 'red' fleshed apples about..but without any further info it is impossible to say what variety it might be.
The newest one in cataloques is Redlove..but its only been available for few years now..so to be that one, your fellow plotholders tree would be only a youngster and perharps only producing its first or second crop.
There is few older varieties too..but as for now, cannot remember their names without doing some digging.