Did the Glow app get your ovulation date correct?

Question

glow app get your ovulation date correct?" /> 
I have 3 apps.  FF says I O later than the wearable thermometer and Glow.  I’m experiencing light watery CM. According to Glow I’m in my window.  FF and the wearable say a few more days. Anyone having this issue with apps not correctly timing?

Answer

Glow is usually three days late for me but the period is either right on or within a day.  Which is why I keep doing the opk’s and make the adjustments on the calendar

Answer

Glow was correct for me when I conceived because I was tracking extremely carefully and using opks, then logging. Otherwise it’s usually correct within a couple of days.

Answer

maybe I'm doing something wrong with my calendar but I think according to my calculations I'm supposed to ovulate 14 to 15 days before my next period but the app is not calculating what I put in for some reason. I really think I messed up and did it wrong