Apps show difference in ovulation

Ashley • 💋Mother of 3 boys, wife to 1 amazing man! 😘 Boy Mom 💙👨‍👦‍👦👩‍👦

2 different apps showing 2 different ovulation days. I am still having heavy EWCM. According to the apps I should be 4-5 DPO. Does having EWCM this long after ovulation mean anything? Made sure to BD last night to be sure we caught our egg. Also notice the fertile windows are different between the apps!