OPT HELP!!! Am I ovulating?

Jasmine
I'm new to using OPT but I decided to take one today since glow is saying today is ovulation day and I have another app who says it's tomorrow. My question is what exactly does this test mean? The line is not as dark as the control line so am I not ovulating yet? Or since it's almost as dark does that mean I may be ovulating tomorrow? (I'm testing again tomorrow as well) I'm just a little lost so any advice would be super helpful!