Last month Appou set the new record when, aged 43 years and 354 days, he played in a 2015 Africa Cup of Nations qualifier against Mauritania.
And while that 1-0 defeat called time on his country's campaign, Appou is eager to be part of the next challenge.
"I am very proud to have broken Roger Milla's record" Appou told BBC Sport. "Milla is not only an African legend, but an international icon.
"We cannot compare ourselves but the record is mine.