Ovulation photo predictor

Anyone else logging photos of their tests on here? I took a photo and it automatically rated it on a negative to positive scale and said negative. But I’ve noticed that for the past few days it moves up a notch on the Negative-Positive scale and that the number of notches and the day of ovulation match up on my calendar. Which makes me wonder if i should even keep testing daily or just know that the day marked down as ovulation is for sure it?