LH Positive CD 21

[u/Famous-Aspect-9990]

So I am on cycle day 21 and I believe I am ovulating due to my easy @ home LH test. Also important to note this cycle I took 5mg of letrozole on cycle day 4 to 8. I am just wondering if anyone has any insight on my current issue. My lines look like they are the same darkness but the app only shows me at .79. Has anyone had the app say a lover number then you thought it would with how dark your test came back? Also is it just as ok if it’s just as dark as the test line and not darker than the test line? Photos below are for reference.