OPK Tests

Kassie • A mommy of a little boy. Wife to a handsome man. Trying to build our family ❤️
So I've been using the OPK ovulation testing sticks to see when I will ovulate. I have a couple apps that project my fertile week and my projected ovulation day. Well one of the says I'm supposed to be ovulating today but I took an OPK test and the line wasn't as dark as the control line. Am I in the peak of ovulation or am I just not testing at the right time?